Commit Graph
618 Commits
Author SHA1 Message Date
Luis Cossío a7d16e0dc1 impl IoUringFile::read_bytes_async 2026-08-18 18:32:03 -04:00
Luis Cossío 3692087057 impl read_bytes_async stubs 2026-08-18 17:16:29 -04:00
Tim Visée 9f01222ccf Integrate new bitflags structure (#10123)
* Add `FlagsMode::from_feature_flags`, the mode for newly created flags

Compact in serverless-compatible deployments, dynamic otherwise. Only
creation consults it; opening existing flags detects their mode from
disk.

* Support the compact mode in the read-only flags types

Add `ReadOnlyFlags`, the mode-dispatching union of the two read-only
counterparts, serving the shared `RoaringFlagsRead` surface. Teach
`InMemoryBitvecFlags` to detect the mode it opens; its compact
`reload_appended` decodes the whole (small) file, as the format has no
random access.

* Create flags through mode selection in storages and indexes

Vector storage deleted flags and the bool/null indexes now open through
`open_or_create` with the mode from the feature flags: serverless
deployments create compact flags, dedicated ones keep creating dynamic
flags, and existing flags are opened in their detected mode either way.

* Read flags in either mode in the read-only bool and null indexes

`ReadOnlyFlags` shares the `RoaringFlagsRead` surface and the lifecycle
signatures of the roaring type it replaces, so the swap is a type
rename.

* Add TODO to not lock bitmask structure during flush

* `MutableStoredBitmask::save` returns the number of bytes written

Zero when the skip-clean save wrote nothing. Lets wrappers charge the
actual write to a hardware counter.

* Refuse to open compact flags in a dynamic-mode directory

Creating the compact file next to dynamic files would leave a directory
of both modes behind, which every later open rejects — refuse up front
instead. Both production callers already rule the case out through
`FlagsMode::detect`, so this only removes a foot-gun for future callers.

The open-or-eagerly-create logic moves into
`open_or_create_compact_mask`, shared with the update-only writer next.

* Rewrite `UpdateOnlyStoredFlags` onto the compact bitmask

The update-only flags writer now writes the compact mode — a single
roaring-encoded `compact_flags.dat` through `MutableStoredBitmask` —
instead of rewriting the whole padded dynamic file pair every batch. A
flush with no effective changes now writes nothing at all, where the old
writer rewrote the full mask on any `set`.

This also fixes opening serverless-created segments: the old open
eagerly wrote a `status.dat` into directories the writable side had
created in the compact mode, leaving files of both modes behind and
poisoning the directory for every later open.

A directory already holding dynamic-mode flags is refused loudly rather
than kept current or migrated; rebuild the segment to migrate its flags.
Migration may come later.

Drops the now-dead `InMemoryBitvecFlags::into_bitvec` and
`DynamicFlagsStatus::new`, and demotes `file_size_for` to private.

* Run edge tests with serverless feature flags

The edge fixtures ran with default feature flags, building leader shards
with dynamic-mode flags — a configuration edge never serves in
production, and one the update-only flags writer now refuses. It also
hid that the writer poisoned compact directories: no test exercised
update-only writes over a serverless-created shard.

Feature flags are process-global and first-init-wins, so every fixture
in the binary initializes the same serverless set; the manifest test
folds into it, since serverless implies `write_segment_manifest`.

* Don't use sequencial mode for one shot reads
2026-08-18 17:51:21 +02:00
Arnaud GourlayandClaude Opus 5 f3ffc65531 fix(shard): flush CoW destinations before the payload-index pre-build flush (#10201)
* fix(shard): flush CoW destinations before the payload-index pre-build flush

create_field_index force-flushes each segment before building an index on it
(flush-before-build, #9767), one segment at a time, outside flush_all's
all-segment lock capture and copy-on-write dependency ordering. That flush
durably advances a CoW source past the delete halves of its pending moves.
The appendable-first iteration order usually flushes the destination before
the source, but not always: a destination proxy-wrapped by a running
optimization is classified non-appendable and can skip its flush entirely
through the already_indexed short-circuit (the proxy reports the field as
present), and a move landing mid-pass is ordered behind nothing. Once the
source flushes, the move's WAL entry stops being replayable: the pre-image
is durably deleted while the only current copy sits in the unflushed
destination, and a graceful close then loses the point.

This is the root cause of the nightly model-testing reload divergence
(#10095), traced end-to-end in CI runs 31583878492 and 31583871346: cow move
op 5197 into a freshly proxied destination, index op ~5252 flushing every
source past it while skipping the proxy, destination reloading at 5181,
replay declining with 'No point with id'.

The fix mirrors flush_all's invariant at the only per-segment flush site:
before flushing a segment, flush the destinations of its pending
flush_dependency edges (one hop suffices, destinations are appendable and
never CoW sources). Destination guards are taken before the flush lock to
keep the documented [segment locks -> flush lock] ordering.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* test(shard): regression test for the CoW-destination flush in create_field_index

Reproduces the #10095 loss shape deterministically: a pending copy-on-write
move out of a non-appendable source, a destination whose own pre-build flush
is skipped by the already_indexed short-circuit, then a holder-wide
create_field_index. Verified failing with the dependency-aware flush
neutralized (destination stays behind the move while the source flushes past
it) and passing with it.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* refactor(shard): move the CoW-aware single-segment flush into SegmentHolder

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

---------

Co-authored-by: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-08-18 16:08:27 +02:00
xzfc 74dd4b71e3 Integrate batched HNSW (#10194)
* [14] HnswGraph: wrapper enum over in-RAM and batched graphs

* [15] HnswGraph: route async backends to the batched graph

* [15.a] De-tautologize `test_open_matrix`

Anti-pattern: `expect_batched` mirrors `format_is_batched` logic.

* [16] HNSW healing: reopen as direct

* [17] Add async_hnsw_graph feature flag

* Batch size
2026-08-18 12:24:16 +00:00
Luis Cossío 57e7389f91 [LiveReload] Prepare segment preload (#10221)
* genericize live_reload fs parameters

* impl live_preload for ReadOnlySegment

* split edge refresh into preload and apply passes

* only rotate file infos after successful reload
2026-08-17 21:43:24 -04:00
3836a0bfc4 Add writer for stored bitmask type (#10107)
* Extract stored bitmask encoding into `bitmask_file_bytes`

Also single-source the u32 position-space bound as `MAX_LOGICAL_LEN`.

* Add `MutableStoredBitmask`, collecting bitmask changes in RAM

Materializes via the existing reader without keeping the file handle open, tracks diverged positions, and atomically rewrites the whole file on save - skipping the write when nothing changed.

* Rename payload to bits

* Use changed boolean

* Remove now obsolete test

* Borrow the bitmap in bitmask encoding via Cow, avoiding a clone on save

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

---------

Co-authored-by: generall <andrey@vasnetsov.com>
Co-authored-by: Claude Fable 5 <noreply@anthropic.com>
2026-08-17 18:15:05 -04:00
tellet-q dfca67f5ed feat(consensus): warn when applying a single entry stalls the consensus thread (#10215)
* feat(consensus): warn when applying a single entry stalls the consensus thread longer than a threshold
2026-08-17 13:23:10 +02:00
Andrey VasnetsovandClaude Fable 5 5f8cef9ebd [UpdateOnly] Writer over object storage (#10214)
* Drop the vestigial UniversalWrite bound from the update-only writer

Neither writer kind performs in-place writes: AppendableSegment is built on
UniversalAppend, and DeleteOnlySegment tombstones via whole-mask atomic_save
(UniversalWriteFileOps), which UniversalAppend's supertrait already carries.
The bound is a leftover from the DiskIdTracker-based iterations that mutated
the deleted mask in place.

With it gone, UpdateOnlyEdgeShard::apply_batch is instantiable with the
object-store-appendable CachedBlobFile.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

* edge-shard-update: --apply writes the batch, over object storage too

Open the object-storage backends through CachedBlobFs/CachedBlobFile
instead of the read-only DiskCacheFs handle, so the shard is appendable in
both modes, and add --apply: generate the same schema-derived batch and run
apply_batch instead of preview_batch. Dry run stays the default and the
generation is shared, so the preview cannot drift from what an apply would
do. AwsConfig::native_append is exposed as --native-append for
AiStor/RustFS-style endpoints; the Cached* types join io_bridge_object_store's
re-export of the io_bridge stack.

Applying to a leader-produced shard currently fails with a clean refusal —
its appendable segment's payload storage was created in mutable mode, which
the append-only writer rejects — the known segment-bootstrap gap, next in
line.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

* CachedBlobFile: latency tracing for append_bytes

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

* UpdateOnlyEdgeShard: sequential batches through one writer

Writers open once at shard open, next to the lookup segments they resume
from. apply_batch hands the writer back on success, live-reloading the
lookup half of every segment the batch wrote to (new
LookupSegment::live_reload, mirroring the read-only segment's); on error
the writer is consumed, since its lookups may no longer describe the
durable state.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

* edge-shard-update: --interactive mode, sequential batches on one writer

After each applied batch, prompt on stdin for the next round's ids and
apply them through the writer apply_batch handed back — no shard
re-open — with op-num (and seed) incremented per round.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

* CachedBlobFile: create the missing object on an offset-0 rewrite append

The caller-side rewrite path (part-copy S3 stores below the direct-append
threshold) validated the offset against the mirror length, whose
initialization HEAD-requests the remote and surfaced NotFound for an
object that does not exist yet. Direct-append backends (GCS compose,
native append) already create the object on an offset-0 append; the
rewrite now reads a missing remote as length zero so its whole-object PUT
does the same, and a non-zero offset against a missing object reports an
offset conflict.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

* UpdateBatchOutcome: per-point records of retired slots

Each applied point now carries a PointApplyRecord: what happened to it
(stored/deleted/skipped/missing) and which slots it vacated where —
tombstoned per segment, or superseded in place for the old write-target
copy of a stored point. Built in the same loop that decides
tombstone-vs-supersede, so the report cannot drift from the writes.

edge-shard-update logs one line per point after the applied summary,
telling a fresh insert from an overwrite and naming the segments the old
copies were deleted from.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

---------

Co-authored-by: Claude Fable 5 <noreply@anthropic.com>
2026-08-14 20:06:00 +02:00
Andrey VasnetsovandClaude Fable 5 06ffcb881f Add CachedBlobFile: cached reads + write-through appends for object stores (#10206)
* Add CachedBlobFile: cached reads + write-through appends for object stores

Combine a DiskCache mirror (reads) with a BlobFile remote handle (appends)
into CachedBlobFile/CachedBlobFs, the appendable universal-IO citizen for
object stores. Appends perform the remote mutation inline and are durable
at Ok: a native write-offset append in AppendMode::Native (with a soft
limit on appends per object), or a whole-object rewrite in
AppendMode::Rewrite for stores without native append. After a successful
append the mirror length is advanced without extra IO; appended blocks
fault in from the remote on first read.

The multipart UploadPartCopy rewrite path (prefix >= 5 MiB) and the
rewrite-required error classification are left as todo!() pending the
AsyncRewrite backend capability.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

* Backend-advertised AppendMethod; reactive appended-block cap recovery

Replace CachedBlobFile's stored AppendMode with AsyncAppend::supported_append:
the backend advertises Native or PartialUpload, and append takes a matching
AppendRequest variant, rejecting the ones it does not support. The multipart
UploadPartCopy todo moves into the S3 backend's PartialUpload arm.

Drop the native_appends soft-limit counter: it is per-handle in-memory state
that resets on every restart, so it can never be the correctness mechanism
and persisting it would not make it authoritative either. The store is the
authority: hitting its appended-block cap now surfaces as the new
UniversalIoError::AppendRewriteRequired (S3 400 TooManyParts), and
CachedBlobFile recovers with a whole-object rewrite. Unrecognized errors
stay hard errors instead of silently triggering rewrites.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

* Per-store append strategies; server-side rewrites for plain S3 and GCS

Replace the single AppendContext struct with an enum of strategy objects,
one per store capability, each owning its append logic:

- NativeAppend: the signed write-offset PutObject (S3 Express, MinIO
  AiStor; AwsConfig::native_append declares it for AiStor-like endpoints,
  s3_express implies it).
- PartCopyAppend: plain S3 — appends land as one atomic multipart rewrite
  whose prefix parts are server-side UploadPartCopy requests; nothing but
  the appended data crosses the network. object_store keeps such
  provider-specific calls out of its portable surface, so the requests are
  hand-signed like the native append.
- ComposeAppend: GCS — the appended data is uploaded as a temporary
  neighbor object and composed onto the destination server-side,
  conditional on the observed generation (a real compare-and-swap).

AppendMethod is replaced by AppendSupport, which tells the caller the only
thing it needs: when the store takes a direct append. Always (native, and
compose: no part minimums, no block cap), AboveThreshold (part-copy: the
copied prefix lands as non-last multipart parts, >= 5 MiB each), or Never.
CachedBlobFile drops its hardcoded MIN_COPY_PREFIX and rewrites locally
only below the backend-advertised threshold; AppendRequest::Rewrite now
means only "append and rebuild as a single blob" — the appended-block cap
recovery.

The append module is split one file per strategy, with a shared
SignedRequestContext transport and a test-only HTTP stub.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

* DiskCache tracks the remote object's etag

Seeded from the new known_etag open extra (OpenExtra::with_known_etag),
refreshed from FileInfo on schedule_reopen, and settable directly for
callers that mutate the remote out of band.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

* Remove AppendRequest enum; appended-block cap recovery moves into the backend

AsyncAppend::append takes plain (path, offset, data). A native S3 store
that rejects an append with TooManyParts now falls back to the part-copy
rewrite inside the dispatcher, instead of surfacing AppendRewriteRequired
to CachedBlobFile for a second Rewrite request. The Rewrite variant was
handled identically to Append everywhere except that one native path.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

* Escalate to download+rewrite when the store rejects a part-copy rewrite

The cap-recovery rewrite is chosen by the store's returned error, not a
client-side threshold: a part-copy attempt rejected with EntityTooSmall
(typed as UniversalIoError::AppendEntityTooSmall, parsed from the S3
error <Code>) falls back to downloading the sub-part-minimum prefix and
PUTting the whole object back, guarded by a prefix-length offset check.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

* Fix S3 Express appends: zonal endpoint + s3express SigV4 service

Hand-issued appends targeted the standard endpoint and signed as "s3",
so every append to a directory bucket got 404 NoSuchBucket, masked as
AppendOffsetConflict by the 404 mapping. Derive the zonal
{bucket}.s3express-{az}.{region} base from the mandatory --{az}--x-s3
bucket suffix (mirroring object_store's private derivation), carry the
SigV4 service name in SignedRequestContext, and treat a 404 as a
conflict only for NoSuchKey or bodiless responses — NoSuchBucket stays
a loud error guarding the endpoint derivation. extract_xml_tag moves up
to the context module and now tolerates tag attributes and
pretty-printed bodies.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

* Server-side etag precondition on appends; BlobFile loses UniversalAppend

AsyncAppend::append carries an expected_etag that S3 part-copy rewrites
attach as x-amz-copy-source-if-match (412 -> AppendEtagMismatch, a new
typed error) and download_rewrite checks against the GET's own etag;
native write-offset PUTs and GCS compose ignore it. BlobFile appends
only through the inherent etag-aware append_bytes now — CachedBlobFile
calls it directly with its DiskCache-tracked etag — and BlobFs's
mutating ops become inherent, delegated from CachedBlobFs, per the
standing TODOs. The append conformance battery runs over the
CachedBlobFs stack, via new direct constructors that share one backend.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

* Drop unfulfilled too_many_arguments expectation

rewrite_parts has exactly seven parameters — at the clippy threshold,
not over it — so the lint never fires and the expect fails CI under
-D unfulfilled-lint-expectations.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

---------

Co-authored-by: Claude Fable 5 <noreply@anthropic.com>
2026-08-13 18:26:49 +02:00
Ivan PleshkovandClaude Opus 5 86b9330628 transfer: send raw payloads, behind feature flags (#10066)
A raw point can carry its payload as the byte blob it is stored as, mirroring
`PointStructRaw.raw_payload` on the internal gRPC API. The blob travels from the
sending node into the receiving node's WAL untouched, so the sender never parses
the payload it read and neither node builds a protobuf value tree for it.

It is parsed exactly once, where the operation is unpacked for apply
(`process_point_operation`), because that is the first place the parsed form is
actually needed: `set_full_payload` goes through the payload index, which cannot
be updated from bytes. The gRPC boundary therefore only checks the encoding tag
and rejects a point that sets both payload fields, the way the enclosing request
already rejects both `points` and `raw_points`.

Moving the parse onto the apply path makes its error classification load-bearing,
so a malformed blob is reported as `OperationError::MalformedPayloadBlob` — the
payload sibling of `MalformedVectorBlob`, mapped to `CollectionError::BadInput`
for the same reason: a bad blob that reached the WAL has to be skipped on replay
instead of crash-looping recovery.

Three consequences of the blob living that long are handled explicitly rather
than by convention:

- `decode_payload_raw` takes the blob only once it has parsed, so a failure
  leaves the point holding it instead of holding neither representation.
- `upsert_points_raw` and `sync_points_raw` refuse a point that still carries a
  blob. They read the parsed payload, so such a point would otherwise be stored
  with no payload at all, and a `debug_assert!` would not catch it in release.
- `is_equal_to` compares blob to stored blob as bytes. A differing encoding costs
  a redundant upsert on sync, never a skipped one.

The `raw_payload_transfer` bench measures the trade, per 100-point batch (one
transfer batch) at payloads of ~200 B / ~700 B / ~7 KB:

- Sender, storage bytes to wire: 16x / 37x / 113x faster. This is where the whole
  win is — no parse of the blob that was read, no value tree built.
- WAL encode: 5x / 11x / 25x faster, writing a byte string instead of a map.
- Receiver, wire to applicable point: 1.09x / 1.10x / 1.06x. Near neutral, as it
  swaps walking a prost value tree for a JSON parse.
- Wire bytes: ~6% smaller. WAL bytes: 10-32% *larger*, because the blob is JSON
  while a parsed payload is written as a compact CBOR map.

The WAL growth is accepted rather than fixed: decoding earlier to win those bytes
back costs a second full deserialization, and would leave the receiving side with
a `payload_raw` that is never populated. Making the blob itself compact belongs in
the payload storage encoding (`RawPayloadEncoding` is the extension point for it),
not here.

Two flags, both off by default and both sender-only (nodes accept raw points and
raw payloads regardless), read where the transfer batch is prepared:

- `transfer_raw_points` transfers every collection as raw points, not only those
  whose vector storage would drift in a decode-encode round-trip.
- `transfer_raw_payloads` ships the blob a raw read hands out; without it the
  prepared batch decodes it back into the parsed payload, and the wire message is
  exactly what it is today.

Neither is enabled by `all`: a node only accepts them once it runs a version that
understands them, so they can only be switched on a release later. Nothing
enforces that yet — the transfer has no peer-version gate.

Co-authored-by: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-08-13 11:28:50 +02:00
Yash Singh 73504cc85f fix(common): use checked u32 conversion for simple_disk_cache block range (#10184)
to_block_range cast block indices with a raw as u32, silently truncating
past 64 TiB and reading the wrong region. Mirror the sibling guard in
disk_cache/cached_slice.rs and fail loudly with u32::try_from(...).expect.
2026-08-12 13:50:47 +02:00
Luis Cossío 500eed65b1 add etag to FileInfo (#10190) 2026-08-12 11:34:25 +02:00
Andrey VasnetsovandClaude Fable 5 b43f70a6b6 [UpdateOnly] tombstone points in immutable segments via whole-mask rewrite (#10196)
* [UpdateOnly] tombstone points in immutable segments via whole-mask rewrite

DeleteOnlySegment::tombstone_points marks the retired slots in the
segment's deleted-points bitmask (id_tracker.deleted, shared by the
immutable and disk-resident tracker formats) and replaces the file
whole via atomic_save — the one mutation that works on backends
without random-offset writes. Both read-only trackers already
live-reload this file by opening a fresh handle and diffing, so the
rewrite needs no read-side changes.

The mutation cycle lives in StoredBitSlice::atomic_update: read the
stored bits (or start from a caller-provided seed), apply the update,
save atomically; a closure error writes nothing. The seed comes from
the read phase by analogy to AppendableIdTrackerState:
LookupSegment::writer_state now returns WriterIdTrackerState, whose
DeleteOnly variant carries the deleted mask when the tracker already
holds it in memory — always for the immutable tracker, only if
materialized for the disk-resident one, which deliberately avoids
loading the full deleted set.

Tombstoning needs no more of the backend than reads plus atomic_save,
so DeleteOnlySegment's bound drops to
UniversalRead<Fs: UniversalWriteFileOps>.

Unlike the writable trackers' drop(), the slot's version is not zeroed
(the versions file is in-place-mutated, which object stores cannot do):
deletion authority in these formats is the bit — every lookup filters
through it — and a stale version on a tombstoned slot is the same state
a crash between drop-bit and drop-version leaves, which
fix_inconsistencies already absorbs as storage cleanup.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

* Close the temp-file handle in tests that atomically replace it

NamedTempFile holds the file open for its lifetime, and Windows refuses
the rename in atomic_save while any handle is open. into_temp_path()
closes the handle and keeps the deletion guard.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

---------

Co-authored-by: Claude Fable 5 <noreply@anthropic.com>
2026-08-12 09:56:23 +02:00
Luis Cossío fb1d00ecc1 [LiveReload] impl LiveReload::live_preload for Blobstore (#10039)
* impl for Gridstore

* impl for Logstore

* fix path in `Tracker::preopen`

* take non-mut `&self`

* support UnchangedOpen in `live_reload`
2026-08-11 19:14:44 -04:00
Luis Cossío 3a7d5781ec schedule_reopen takes &self (#10192) 2026-08-11 17:41:45 -04:00
Luis Cossío 8f5e83b13d [CachedFs] Unchanged file open is no-op (#10050)
* add `UniversalIoError::UnchangedOpen`

* add & impl `CachedReadFs::reschedule_prefetch`

* clippy

* add `OkUnchanged` helper

* propagate scheduling errors immediately

* drop lock before reacquiring it

* clear prefetched_files on new snapshot

* only avoid prefetch on full FileInfo equality

* `UnchangedOpen` maps to `Cancelled`

* match-all match
2026-08-11 17:41:44 -04:00
Andrey VasnetsovandClaude Fable 5 6633205704 [UpdateOnly] create Blobstore-backed storages append-only under a feature flag (#10154)
* [UpdateOnly] create Blobstore-backed storages append-only under a feature flag

A new `append_only_storages` feature flag, enabled by `serverless_compatible`,
switches every Blobstore creation site — the payload storage, the appendable
field indexes (numeric, map, geo, full-text) and the sparse vector storage —
to the append-only Logstore mode. One shared helper maps each site's Gridstore
layout to its Logstore counterpart, carrying the page size and compression
over; blocks and regions have no append-only equivalent. Only creation
consults the flag: an existing storage keeps its persisted mode, both modes
are always readable, so flipping the flag never strands data.

Two changes make the flag usable rather than booby-trapped:

`Logstore::delete_value` now succeeds trivially where nothing is stored, as
mutable mode does, and errors only for a stored value. The ordinary write
paths delete defensively — an index clears a slot before filling it, an empty
value is stored as a deletion — and only ever hit occupied slots when
something is genuinely mutated in place.

A segment derives `append_only_storages` from the persisted payload storage
mode when it opens — not from the flags, which may have changed since it was
created — and it forces append-only mutation semantics on itself: every
mutation clones to a fresh slot, and the same-operation slot-reuse shortcut
is disabled, since the second step of a multi-step write would rewrite a
payload row those storages cannot rewrite.

The end-to-end test runs as its own binary (feature flags are process-global)
with `serverless_compatible` on: the segment comes out holding Logstore
storages, and upserts, updates of existing points, multi-step same-operation
writes, deletes, an index build over existing points, a flush and a reload all
run against them.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* [UpdateOnly] assume the flag pairing instead of deriving it, trim the docs

Per review: `append_only_storages` without `append_only_mutations` is not a
state to defend against — `init_feature_flags` forces the pairing, and the
same-operation slot-reuse check reads the flag directly. That deletes the
segment-side derivation: the `append_only_storages` segment field, the
persisted-mode read at open, and the `is_append_only` accessor chain through
`Blobstore`, `PayloadStorageImpl` and `PayloadStorageEnum`.

Docstrings and comments trimmed to the guarantees; how the write paths use
them is their own business.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* [UpdateOnly] restructure the creation config around mode-neutral options

`CreateOptions` in the blobstore crate holds what a caller actually decides —
page size, block size, compression — and `into_config(append_only)` turns them
into the config of either mode, each taking the fields it can express. The
segment-side `storage_config` supplies only the mode, from the feature flag.

That removes the misnomer chain the previous cut left behind: nothing named
gridstore returns a config that might not be one, and no call site builds a
`GridstoreConfig` just to have its fields repacked.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* [UpdateOnly] keep Logstore strict; fix the callers that deleted nothing

Per review, `Logstore::delete_value` goes back to an unconditional error: a
delete reaching an append-only storage is a caller bug to fix, not a case to
absorb. The callers that issued vacuous deletes are fixed instead:

- The numeric and geo indexes only delete from the storage when their
  in-memory index actually held values at the slot — the two are written in
  lockstep, so an empty slot has nothing stored either. The map and text
  indexes already worked this way.
- The sparse storage skips the delete for keys at or past its end, where
  nothing was ever stored.

Each removed call was wasted work in mutable mode too. The e2e test now also
drives a numeric index and the sparse storage against append-only mode, and
asserts that deleting a stored sparse vector fails.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

* [UpdateOnly] drop the same-op slot reuse; upserts write the whole point at once

The append-only path never needs a multi-step point write: the one real
multi-stepper was the shard's upsert — `upsert_point` followed by a payload
step under one operation number — and it now goes through
`upsert_moved_point`, which writes vectors and payload as one operation and
one slot. With that, the same-operation slot-reuse carve-out in
`handle_point_mutate` has nothing to carry: on an append-only segment every
mutating step clones to a fresh slot, unconditionally, and the
`append_only_storages` special case disappears with it. The version gate
skips only on strictly newer versions, so a caller that still multi-steps
stays correct — it pays a slot per step.

`PointToUpsert` now exposes the point's parts — raw vectors, decoded vectors,
payload — and both write paths are provided from them: `upsert_into` hands
the parts to `upsert_moved_point`, `write_moved` adapts them to the
copy-on-write move callback. The two hand-written `upsert_into` bodies and
the follow-up payload helper are gone.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

* Regenerate OpenAPI for the `append_only_storages` feature flag

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

* one extra debug assertion

* fmt

---------

Co-authored-by: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-08-11 15:35:55 +02:00
dependabot[bot] f206bbca68 build(deps): bump serial_test from 3.5.0 to 4.0.1 (#10169)
Bumps [serial_test](https://github.com/palfrey/serial_test) from 3.5.0 to 4.0.1.
- [Release notes](https://github.com/palfrey/serial_test/releases)
- [Commits](https://github.com/palfrey/serial_test/compare/v3.5.0...v4.0.1)

---
updated-dependencies:
- dependency-name: serial_test
  dependency-version: 4.0.1
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
2026-08-10 16:31:30 -04:00
Shruti Sharma 911d6a2afa perf(common): add zero copy fast path for multi-block disk cache hits (#10108) 2026-08-10 16:25:20 -04:00
b60f298dea Add UpdateOnlyAppendableIdTracker, the append-only ID tracker writer (#10093)
* Add UpdateOnlyAppendableIdTracker, the append-only writer

The write counterpart of `ReadOnlyAppendableIdTracker`, producing the two
files that tracker already consumes — `mutable_id_tracker.mappings`, an
append-only log of mapping changes, and `mutable_id_tracker.versions`, a
dense array of one version per slot — through `UniversalAppend`, so the
same code drives a local file and an object store.

`insert_operations` records a batch of `MappingOperation`s in order: an
insert claims the next slot above the highest one in use and reports it,
a delete retires an external id and claims nothing. Nothing is rewritten
in place, so re-inserting a live id moves it to a fresh slot and
supersedes the old one — the update-only shape of an update.

`set_internal_versions` extends the versions array. Ids may come in any
order but must be exactly the slots the array does not cover yet: a slot
below the end would need an in-place overwrite, and a hole would have to
be zero-filled — and since "covered by the versions file" *is* the commit
signal for readers, that would publish a slot as a live point of version
0 before its data exists. Both are rejected rather than written.

Both methods append at an offset they probed for, never at an implicit
end: the offset is a compare-and-swap token, so a file that has moved on
since the probe is rejected instead of being written twice or in the
wrong place.

Both have persisted what they wrote when they return `Ok` — append, then
run the handle's flusher — and nothing is buffered across calls. The
order of the two calls, claim the slot then commit the version, is what
makes a crash in between safe: readers ignore slots the versions array
does not cover. Cleaning up the slots such a crash abandons is left to
the opener, along with repairing a torn tail; the writer fails loudly
rather than guessing.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* Share the versions file format between both write paths

`set_internal_versions` was reimplementing what `versions_storage`
already knew: entries are `SeqNumberType`-sized, slot `n` lives at
`n * VERSION_ELEMENT_SIZE`, a file length that is not a whole number of
entries has a torn tail. Every one of those facts existed in two to four
places, spelled as inline `/`, `%` and `write_u64::<FileEndianess>`, so
the append-only writer could drift away from the in-place one silently.

Move them into `versions_storage`, which now owns the format for both
writers and both readers:

- `write_version` / `read_version`, the entry codec, with a static
  assertion tying its `u64` to `VERSION_ELEMENT_SIZE` so a change to
  `SeqNumberType` cannot silently shrink every offset;
- `version_offset` and `versions_byte_len`, the slot arithmetic;
- `VersionsLayout`, which splits a file length into committed entries
  and a partial tail. The two writers still react differently — the
  in-place one truncates the tail, the append-only one refuses it,
  because an append cannot — but they no longer each work out what the
  tail is.

`store_version_changes`, `load_versions`, `set_internal_versions` and
the read-only tracker's live reload all go through it. The write loops
themselves stay separate: one seeks to sparse offsets, the other emits a
validated consecutive run, and merging them would obscure both. What
they share is where the bytes go, which is the part that must not
diverge — and a new test pins it down by writing the same versions
through both writers and comparing the files byte for byte.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* Append mapping and version entries as batches

Both writers built one concatenated buffer and handed it to `append`.
`append_batch` takes the entries as separate buffers and places them in a
single operation — a vectored write locally, one request on an object
store — so the entry boundaries reach the backend instead of being
flattened away first.

Versions are fixed-size, so the entries are the payload's
`chunks_exact`. Mapping changes are variable-length, so their bounds are
recorded as they are serialized.

Both keep the compare-and-swap offset, which `append_batch` validates the
same way `append` does.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* Test the writer against MutableIdTracker end to end

The suite leaned on round-trips through the storage loaders, which only
restated what the writer had just written. Four such tests are replaced
by one that checks the property actually worth having: drive the
append-only writer and `MutableIdTracker` with the same points, versions
and deletes, open each segment through `ReadOnlyAppendableIdTracker`, and
require the two views to be indistinguishable — counts, deleted state,
external ids, live points' versions, and id resolution.

Versions are compared for live points only. `MutableIdTracker::drop`
overwrites the slot with `DELETED_POINT_VERSION`, which an append cannot
do, so the append-only writer leaves the point's original version there;
neither is observable for a point that is gone.

The remaining tests keep what a round-trip cannot show: slot allocation
across calls, instances and deletes (three tests folded into one), the
rejection of holes and rewrites, and the byte-for-byte agreement of the
two writers on the versions file.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* better buffer names

* fmt

* Heal a torn versions tail instead of refusing to write

A writer that dies mid-entry leaves the versions file ending inside a
slot. The in-place writer already truncated that tail before writing;
the append-only writer refused, which left the file unwritable forever
since an append cannot truncate.

Share the decision — what counts as torn, the healthy length, the
warning — in `heal_versions_tail`, and let each writer supply the shrink
its backend can do: `set_len` in place, or reading the committed prefix
back and putting it in place as a whole file where there is no truncate.

Dropping the tail loses nothing: the array covers a slot only once its
whole entry is there, so a partial entry belongs to a slot no reader ever
saw and no writer counted as committed.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* Append mappings at the end of the log, not the end of the file

Mapping entries vary in length, so no length tells you whether the log
ends on an entry boundary. Appending at the file's end therefore could
not fail: a torn entry was silently appended after, and every entry from
there on was framed off the stray bytes.

Carry the boundary instead. `new` takes the offset just past the last
complete entry — `ReadOnlyAppendableIdTracker::mappings_read_to`, from
the same view that supplies `max_internal_id` — and appends there, which
turns a file ending elsewhere into an append offset conflict. On that
conflict `heal_mappings` cuts the file back to the log's end, the same
read-prefix-and-rewrite the versions file heals with, and writes the
batch again.

A torn entry and a batch that landed unacknowledged are indistinguishable
without parsing, and need not be told apart: neither `max_internal_id`
nor `mappings_end` moves before an append is durable, so the retry writes
the same bytes at the same offset.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* Move the healing functions into their own file

`update_only/mod.rs` had grown to hold the writer, its two public write
paths and the two repair routines they fall back on. Split the latter
out: `heal_versions` and `heal_mappings` move verbatim into
`update_only/heal.rs`, as a second impl block, following the layout the
read-only half already uses (`lifecycle.rs`, `live_reload.rs`).

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* Retire inherited pending inserts when opening the writer

A slot is spoken for from the moment the mappings log claims it —
components may already have written data at it — so the writer must
resume above every slot the log ever handed out. Deriving that bound
from a reader's point set undercounts it twice over: a claimed slot
whose version was never committed is not in the mapping, and one whose
external id was deleted afterwards is not among the pending inserts
either. Track it in the log instead, as
`ReadOnlyAppendableIdTracker::max_claimed_internal_id`, bumped on every
insert entry regardless of what becomes of the point, and take it as
`UpdateOnlyAppendableIdTracker::new`'s bound.

The points on those claimed-but-unversioned slots are the other half.
They cannot be adopted: a writer stopped partway through them, so some
components hold their data and others do not, and which is unknowable
here. They cannot be left alone either, the versions array being dense —
covering any slot above one of them publishes it, half-written. So `new`
now takes the pending inserts explicitly and retires them, recording a
`Delete` per id before the writer can be used at all, which is what
makes it fallible. Doing it at construction rather than lazily on the
first write means no write path can be added later that forgets to.

`set_internal_versions` accordingly stops rejecting holes: it writes the
whole run from the end of the array through the highest id given,
covering skipped slots with `DELETED_POINT_VERSION` as the in-place
writer's seek already does. It gains an upper bound in exchange —
publishing a slot means covering every slot below it, so an id the log
never claimed is refused.

Live-reload semantics are unchanged.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* Skip UpdateOnlyAppendableIdTracker heal tests on Windows

Healing replaces the file via atomic_save while an mmap handle is still open, which Windows denies with os error 5.

* Drop mmap handles before healing ID tracker files

atomic_save cannot replace a path while an mmap is still open on Windows.
Copy the committed prefix, drop the handle, then rewrite and reopen.

* Trim ID tracker docs and drop redundant helpers

Condense the doc comments on the update-only tracker to the style of the
sibling modules, merge a duplicate impl block, and remove `read_version`
and a debug assert that restates its own operands.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* Drop the versions layout helpers and inline the arithmetic

VersionsLayout, versions_byte_len and version_offset wrapped one divmod
and one multiplication between them, and adopting the struct made the
live-reload hunk longer than the line it replaced. Compute the committed
length where it is needed instead, and let heal_versions_tail and
heal_versions return unit, since no caller used the layout they handed
back.

Also drop the writer's unused max_claimed_internal_id accessor, and fold
retires_inherited_pending_inserts_at_construction into
retires_inherited_pending_inserts: the merged test asserts the
retirement happened before the writer did anything, and commits a real
version to the retired slot rather than letting it take the filler, so
it still shows the Delete is what hides the point.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

---------

Co-authored-by: Claude Opus 5 (1M context) <noreply@anthropic.com>
Co-authored-by: qdrant-cloud-bot <111755117+qdrant-cloud-bot@users.noreply.github.com>
2026-08-08 17:41:59 +02:00
Jojii 7c0948628d Batched deletion checks in full-scan/exact search (10-35% faster Turbo4) (#10042)
* Batched bitmap checks in full-scan/exact search

Instead of walking the deleted bitmap bit by bit and re-checking every
point, the new peek_top_visible reads all bitmaps one u64 at a time and
handles 64 points in one step.

About 1.5x QPS on unfiltered full scans.

* Remove debug statement

* Extract parallel bitmap scaning into separate helper

* Optimizing `BatchedBitmapScan`

* Also apply to HNSW full-scan fallback
2026-08-07 14:04:05 +02:00
Andrey VasnetsovandClaude Opus 5 908cd2f10a [UIO] Pin the append filesystem to its handle (#10092)
`UniversalRead::Fs` was reachable from an append handle and known to be
a `UniversalWriteFileOps`, but not pinned: `fs.open_append(..)` on it
returned some `Fs::AppendFile`, not the handle type in hand. Pin it the
way the read side is pinned, so `S::Fs` both opens `S` for reading and
hands `S` out as its append handle:

    UniversalRead<Fs: UniversalWriteFileOps<AppendFile = Self>>

Every append handle's canonical filesystem already produced itself
(`MmapFs → MmapFile`, `IoUringFs → IoUringFile`, `BlobFs<A> →
BlobFile<A>`), so this only writes down what held — the workspace
compiles unchanged.

Generic-over-`<S: UniversalAppend>` code now reaches its file-creating,
append-opening filesystem as `S::Fs` with no second associated type, and
`&impl UniversalWriteFileOps<AppendFile = S>` accepts any other producer
— the mirror of `&impl UniversalReadFs<File = S>`.

Co-authored-by: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-08-06 10:24:31 +02:00
Luis Cossío 51bf1a6823 [DiskCache] No-growth reopen is no-op (#10049)
* add `ScheduleReopen::Unchanged` to avoid retrying to reopen blockingly

* wrap `ScheduledReopen` in `Option`
2026-08-05 09:19:46 -04:00
Tim Visée 20391cac08 Bump dev version to 1.19.1-dev (#10097) 2026-08-05 14:40:06 +02:00
Andrey VasnetsovandClaude Opus 5 090d2d6d10 [UIO] Open append handles through UniversalWriteFileOps (#10091)
A file handle that appends was only reachable through
`UniversalReadFs::open` with `writeable: true`, which ties the append
capability to the backend's read handle type. Give the write-side
filesystem trait its own opening path instead:

    type AppendFile: UniversalAppend;
    fn open_append(&self, path, options) -> UioResult<Self::AppendFile>;

`AppendFile` is deliberately not tied to `UniversalReadFs::File`: the two
capabilities live on independent traits, so a backend may serve reads
through one handle type and appends through another, and a filesystem
that opens no read handles at all still names an append handle. For the
same reason there is no `OpenExtra` parameter — the append handle may
come from a different backend, whose per-open knobs would not apply.
`OpenOptions::for_append` forces `writeable` on, since a read-only
append handle is a contradiction rather than an error worth propagating.

Drop the `UniversalWriteFileOps` impls on the two disk caches first.
Both were vestigial: `DiskCacheFs` got its forwarding-to-remote impl
mechanically in the read/write trait split (#9682) and no caller ever
used it, and `BlockCacheFs` lives in a module that is dead code. Neither
cache can open a writeable file, so neither can produce an append
handle; mutations go straight to the backing storage. An
`assert_not_impl_any!` locks this in next to the existing one on
`DiskCache`.

`BlobFs` consequently requires `AsyncAppend` rather than `AsyncWrite`:
only a backend with a native single-request append can hand out an
append handle. Object stores that can just put whole objects (GCS,
Azure) stay read-only through universal I/O; nothing used their write
side.

The conformance suite gains `run_open_append_conformance`, run by
`run_append_conformance` and public for filesystems whose own `File`
does not append. It covers `MmapFs`, `IoUringFs` and `BlobFs` over the
in-memory object store.

Co-authored-by: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-08-05 14:14:57 +02:00
Andrey VasnetsovandClaude Opus 5 aa6c5d8403 Global quota API (#10035)
* feat: global quota API

Memory and disk are node-wide resources, so configuring their thresholds
per collection through strict mode makes little sense. Move them behind a
single cluster-wide `QuotaManager`.

The quota config is seeded from `storage.quotas` in the settings (and so
from env vars), overridden by `quota.json` in the storage directory, and
updated cluster-wide through a new `SetQuotaConfig` consensus operation
which rewrites that file on every peer. Raft snapshots carry it too, so a
peer that joins by snapshot picks it up.

Quotas are enforced wherever the strict mode memory and disk checks used
to run, but no longer gated behind `strict_mode.enabled`: a value set in
an enabled strict mode config still wins per resource, the quota is the
default. Rejections name both the condition that tripped and the config
that governs it.

`GET /quotas` reports the config plus current utilization to global read
users; `PUT /quotas` replaces it for global manage users.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* fix: cover the quota endpoints in the API consistency checks

`test_all_rest_endpoints_are_covered` and the OpenAPI endpoint count both
break on any new REST endpoint. Add `GET`/`PUT /quotas` to `ACTION_ACCESS`
with their JWT access tests, and bump the expected API count. The quota
endpoints stay out of `REST_ENDPOINT_WHITELIST`: that list is for
data-plane endpoints reported per-endpoint in metrics.

Also add a Raft snapshot CBOR compatibility test — snapshots are exchanged
between peers of different versions during a rolling upgrade, so
`quota_config` must be absent-tolerant in both directions.

Review feedback: persist through `SaveOnDisk`, which already implements the
write-before-swap protocol this was doing by hand; validate the config at
both persistence boundaries, since a hand-edited quota file or a config
arriving through consensus does not pass the REST handler's validation, and
a `0%` limit would reject every update forever.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* test: assert seeding a quota from invalid settings persists nothing

Follow-up to review feedback claiming `SaveOnDisk::load_or_init` writes the
init value before it is validated. It does not — only `SaveOnDisk::new`
persists — but the property matters: were seeding to persist first, invalid
settings would leave a `quota.json` that fails validation on every
subsequent start, and the node could only be recovered by deleting it by
hand. Pin it down with a test.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* refactor: make QuotaManager the single reader of memory and disk

The quota checks measured memory and disk themselves, while the optimizer
and the WAL disk watcher each called `fs4::available_space` behind their
own ad-hoc caches. Fold all of it into QuotaManager: it owns the readings,
the freshness policy, and the limits they are compared against.

Moves the module to `lib/shard`, since the optimizer sits below `storage`
and has to reach it; `storage::quota` re-exports it, so consensus, the
`/quotas` API and StorageConfig are unchanged. The manager is installed as
a process singleton by TableOfContent, ahead of loading any collection.

- Callers hand in QuotaLimits overrides instead of a StrictModeConfig, and
  an override can now only tighten. A collection-level admin could raise
  `max_disk_usage_percent` past a cluster-wide limit that needed global
  manage rights to set; ties resolve to the quota so the rejection names
  the knob that actually has to change.
- Measurements are cached for 5s, but a reading at or above its limit is
  never reused: a rejected client retries, and freeing the resource has to
  take effect on the next request rather than a TTL later.
- `fits_on_disk` sizes an optimization against physical free space only,
  never the configured limits. Optimizations are what free a full disk, so
  the quota must not be what stops one.
- `percent_of` widens to u128 instead of saturating the multiply, which
  under-reported utilization (failing open) above ~184 PB.
- StorageConfig::quotas is optional; absent means no quota is enforced.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* feat: don't recover dead replicas onto a node at a resource limit

Recovering a dead replica pulls a whole copy of its shard onto this node.
If it is already at its memory or disk quota that transfer cannot finish,
and starting it only pushes the node further past the limit. Skip it and
reconsider on a later sync, once the resource frees up.

Adds QuotaManager::check_capacity for work that lands bytes here without
being an update. Unlike fits_on_disk the configured limits do apply:
taking on a replica is not what frees a full node, so there is no deadlock
to avoid by letting it through.

The check is hoisted out of the per-shard loop because a node over its
limit re-measures on every call, so checking per dead shard would cost a
statvfs each. It is free when no quota is configured.

Also trims the comments across the quota module, which had grown well past
what the code needs.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* test: drop trivial and duplicated quota tests

Six tests removed, ~140 lines, with no loss of coverage:

- a_rejection_names_the_knob_that_has_to_change asserted that a format!
  contains its own literals; the message is covered end-to-end by the
  override test and by test_global_quota.py.
- a_node_over_its_quota_has_no_capacity_to_take_on_a_replica was 30 lines
  for check_capacity, a one-line delegation to check_update the test above
  it already calls.
- a_rejecting_measurement_is_never_served_from_the_cache duplicated the
  meter test, which proves the same rule with an injected reader instead
  of inferring it from the real filesystem.
- free_space_is_reported_without_enforcing_anything covered a one-line
  accessor, and its point is what the fits_on_disk test is for.
- The two resolve tests and the three meter tests each collapse into one.

DiskFit::Unknown keeps its coverage as two lines inside the fits_on_disk
test rather than its own fixture. The snapshot compat pair becomes one
test: the second only asserted cluster_metadata.is_empty(), which says
nothing about quotas — the real check was the deserialize, now an expect
that states it.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* fix: re-measure free space as the disk fills, and drop a Windows-only assert

Two CI failures, both from this branch.

e2e test_low_disk: the DiskUsageWatcher I replaced escalated to checking
on every call once free space fell below 512 MB. Folding it into the quota
manager lost that — available_bytes passed no limit, so a reading was
reused for the full 5s however little space was left. On a disk filling as
fast as that test fills it, 5s blind is enough to actually run out and the
WAL write dies instead of returning "No space left on device".

available_bytes now takes a watch_below level and never reuses a reading
under it, which is what the old ladder was expressing. The watcher passes
max(min_free, 512 MB), so the escalation point is back; above it the 5s
cache still costs fewer syscalls than the old 128-call ladder. fits_on_disk
gets the same rule by passing required_bytes, so a merge that does not fit
re-checks rather than sitting on a stale sample.

Windows: fits_on_disk on a missing path was asserted to be Unknown, but
GetDiskFreeSpaceEx resolves up to the containing drive and succeeds — as
common::disk_usage's own test documents. Dropped; the branch is a two-line
else and is not portably reachable.

Also renames an_optimization_is_sized_against_the_disk_not_the_quota, which
needed explaining to be understood.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* feat: report the quota config in telemetry

Reads it from the quota manager rather than the settings, so it is the
config the node is actually enforcing: a peer that missed a consensus
update reports what it is applying, not what the cluster agreed on.

Gated on global access, the same access `GET /quotas` requires, and left
out of `PeerTelemetry` — a quota is per-node state, so each peer reports
its own.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* fix: regenerate OpenAPI, and cover the quota in the telemetry key sets

Two CI failures from the previous commit.

Referencing QuotaConfig from TelemetryData moves its definition earlier
in `components/schemas`, because TelemetryData is generated ahead of
QuotaStatus. Regenerated rather than hand-patched, so the schema is a
pure move.

test_telemetry_detail asserts the exact set of top-level telemetry keys.
The quota is reported at every level, including 0 — it is three scalars,
it is the default the endpoint serves, and it is what explains an update
being rejected — so both key sets gain it.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* feat: remove `max_disk_usage_percent` from strict mode

Disk is a node-wide resource, so a per-collection percentage of it never
meant anything a caller could act on: the limit describes how full the
*node* is, and which collection the write happens to target has nothing
to do with it. The global quota is where it belongs.

It shipped in 1.18.2 without documentation, so this drops it outright
rather than deprecating. Removal is soft in every direction: StrictModeConfig
has no `deny_unknown_fields`, so a client still sending it gets it ignored
rather than a 400, and the same struct deserializes the persisted collection
config, so collections created on 1.18.2+ keep loading. Proto field 22 is
reserved so the number is never reused.

The e2e test becomes a quota test — the fixture and the timing are the
interesting parts and they carry over unchanged; only how the threshold is
configured differs.

`max_resident_memory_percent` was documented and stays for now.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* refactor: enforce the strict mode memory limit outside the quota

`max_resident_memory_percent` was folded into the quota as an override,
which meant the quota check had to know about strict mode, and retiring
the setting would mean unpicking `EffectiveLimit` and `LimitSource` from
the resolution logic.

It is now a check of its own in `verification/mod.rs`, next to the strict
mode checks it belongs with, borrowing only the measurement from the quota
manager — which stays the node's single reader of process memory, so both
checks still share one reading. Deleting the setting later is deleting one
function and its one caller.

`QuotaManager::check_update` takes no arguments and consults the quota
alone. A collection can still only tighten the limit for itself, because
its own check runs in addition rather than in place of the quota's, and
each rejection now names the config that has to change without having to
carry a `LimitSource` to say so.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* refactor: enforce the quota on the update path, not in strict mode

The quota check sat inside `check_strict_mode_toc_batch` only because that
was the one place holding the collection's strict mode config. It doesn't
need one any more, and the placement had a real cost: coverage depended on
each handler remembering to ask for a strict mode check, and four of the
internal update RPCs do — `sync_internal`, which moves the most bytes onto
a node, does not.

It now runs in `Collection::update_from_client` and `update_from_peer`,
which every update passes through. `update_from_client` checks ahead of the
shard split, so an operation is accepted or refused whole rather than
landing on some shards and being refused by others.

Classification moves with it, from ~10 `consumes_memory` impls on request
DTOs to one exhaustive `CollectionUpdateOperations::consumes_quota`. The
internal enum has variants — raw upserts, conditional upserts, the syncs —
that have no client-facing request type, so per-DTO impls structurally
could not classify them.

Shard-transfer syncs stay excluded, as they are today: a transfer is sized
up once before it starts, and refusing its batches partway abandons work
that is nearly done only for it to restart from the beginning.

Index and named-vector creation reach shards through consensus, past this
check — a peer must not refuse what the cluster agreed to — so they keep
their pre-consensus check, now against the quota manager directly.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* feat: deprecate `max_resident_memory_percent` in strict mode

Same reason the disk threshold went: memory is node-wide, so a
per-collection percentage of it caps how full the *node* is, which has
nothing to do with which collection is being written to. The node-wide
quota caps it once for everything.

Unlike the disk threshold this one shipped documented, in 1.18.0, so it
keeps working — as a limit a collection can tighten for itself, never lift
— and gets the usual markers: `#[deprecated]` on both Rust structs,
`[deprecated = true]` on proto field 21, and `deprecated: true` in the
OpenAPI schema, which schemars derives from the attribute.

The note names 1.21 as the removal. Recording a version matters here: the
audit in docs/plans/overdue-deprecations.md found that this repo has never
written a removal deadline down, and members of the 1.15.0 deprecation
batch are still in tree.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* fix: reconcile the quota readers with #9891

#9891 landed effective (cgroup) figures in telemetry while this branch was
making QuotaManager the single reader of memory and disk. Two collisions,
neither of which git sees.

`segment::utils::mem::total_memory_bytes` is now a shared accessor with a
5s TTL, so a cgroup resize is picked up. The quota module had its own
`OnceLock` copy that froze the value at startup — exactly what #9891 set
out to fix — so it delegates to the shared one instead.

Telemetry's new `disk_size` called `common::disk_usage::disk_usage`
directly. That reader lost its TTL cache on this branch when the caching
moved into the quota manager's meter, so it would have taken an uncached
`statvfs` on every telemetry request, and it put a second disk reader back
in the tree. It goes through `QuotaManager::disk_capacity_bytes` now,
sharing the reading the quota check already takes. Verified it still
reports the storage filesystem, matching `df`.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* refactor: split the quota manager by what each half does

`manager.rs` had grown to 450 lines holding three separate jobs: owning
the config and its file, taking the readings, and comparing one against
the other.

- `manager/store.rs` — the `Store` enum, `QUOTA_CONFIG_FILE`, and config
  validation, which is now the store's own business rather than something
  every caller has to remember to do first.
- `manager/measure.rs` — every reading, and `DiskFit`. The "nothing else
  calls `statvfs` or reads process RSS" claim is now checkable by looking
  at one file.
- `manager/enforce.rs` — `check_update` / `check_capacity` and the
  threshold comparison.
- `manager/mod.rs` — the struct, its construction, and the config
  accessors: what a reader needs to see first.

Tests move with their subject. No behaviour change: `set_config` used to
validate before delegating to the store, and now the store validates on
write, which is the same order of operations from the outside.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* fix: count copy-on-write deletes toward the quota

Dropping a vector or a payload key does not free anything on its own:
copy-on-write rewrites the point to produce the version without that
field, so storage grows first and is only reclaimed once the optimizer
gets to it. Gating those as if they were reclaiming space let a full node
keep taking writes that make it fuller.

Deleting whole points stays exempt. That is the one operation that has to
work on a node at its limit, or there is no way back under it.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* docs: say that the quota's reported usage is per node

`GET /quotas` returns one cluster-wide config and one set of utilization
figures, which reads as though both describe the cluster. They do not:
memory and disk are node-local, so `usage` is whatever the peer that
served the request is seeing, and a peer under its limit says nothing
about the others.

Also corrects `resident_memory_percent`, which claimed to be a share of
total system memory. It is a share of the memory available to the
process, which under a cgroup is the limit rather than the host's RAM.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* feat: treat a node over its quota as a failed replica, not a bad request

A quota rejection described the request as invalid (400) and was classified
non-transient, which is how the replica set recognises errors that every
replica would produce alike. A quota is the opposite: the input is fine and
the answer depends on which machine you ask. On the default `wait=false`
path that combination silently dropped the write — `update.rs` only
deactivates transient failures when nothing completed — leaving the replica
Active and permanently missing data its co-replicas had.

It is now `InsufficientStorage`, transient, HTTP 507 / gRPC
`ResourceExhausted`. So a node that is out of room is handled like one that
is offline:

- last active replica, or every replica over quota: nothing could take the
  write, and the client is told the cluster is out of room.
- more than one replica: the full node is deactivated through the same path
  a dead peer takes, and the update stands if enough replicas accepted it.
  `check_capacity` already keeps recovery off that node until it has room.

The check also moves off `update_from_client`, which applied the
coordinator's own limit to the whole operation even when it held no replica
of the shards being written. Each replica set now gates its own local write
and records the refusal as a failure of this peer, so a node only ever
answers for itself.

`ResourceExhausted` is shared with rate limiting, and the reverse conversion
mapped it straight to `RateLimitExceeded` — a forwarded rejection came back
as 429. Statuses now carry a marker so the two stay distinguishable across
the wire.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* feat: report quota pressure per node, and across the cluster

A quota is node-local, so finding out which node has hit one meant asking
each of them in turn — and nothing at all showed up in monitoring.

`/metrics` gains a `quota_exceeded` gauge for the local node. It is emitted
only while the quota is enabled: with it off the value would be a constant
0 that says nothing about the node, and an alert built on it would go quiet
rather than fire if someone disabled the quota. Telemetry's `quota` field
carries the same verdict alongside the config, since that is where the
metric is derived from.

`GET /quotas` now answers for the whole cluster. A new `GetQuotaUsage` RPC
on the internal `QdrantInternal` service returns what one peer is using,
and the handler fans it out to every known peer in parallel. Peers that do
not answer are left out rather than failing the request — the nodes that
are out of room are exactly the ones most likely to time out, and a partial
answer still names them. Outside distributed mode the field is absent
rather than a map of one.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* feat: report the quota metric per resource

`quota_exceeded` was one flag for the whole node, which does not say what
to go and fix — disk is freed by deleting or optimizing, memory by
unloading. It now carries a `resource` label:

    quota_exceeded{resource="memory"} 0
    quota_exceeded{resource="disk"} 1

A resource with no limit gets no series at all, for the same reason the
metric is absent while the quota is disabled: a series that can never reach
1 reads as healthy and would quietly carry an alert that cannot fire.

`QuotaManager::exceeded` returns the per-resource verdict, with `None` for
a resource this node does not cap. Telemetry reports the same breakdown,
since the metric is derived from it. The peer usage RPC keeps a single
flag — it sits next to both percentages, so it only has to answer "is this
peer refusing writes".

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* fix: drop a no-op error conversion the linter caught

`check_global_access` already returns a `StorageError`, so mapping it
through `StorageError::from` converted the type to itself and tripped
`clippy::useless_conversion`.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* feat: hold a tripped quota until usage clears a release margin

A resource resting on its limit crosses it in both directions on the noise
between two readings, and each crossing is expensive: the node refuses a
write, its replica is deactivated, usage dips, recovery starts sending a
whole shard copy back, and the arriving data pushes it over again. The loop
sustains itself, and every lap costs a shard transfer.

A limit now trips at its configured value but only clears once usage has
fallen 5 percentage points below it, so the crossing has to be real. The
margin is floored at 1%, since a limit smaller than the margin would
otherwise be impossible to fall back under and would strand the node.

The verdict is carried on the manager rather than recomputed, which makes
it the thing reporting shows: expect `exceeded` to be set while the
utilization next to it is already back under the limit. Rejections say so
too, rather than claiming a limit that is no longer exceeded:

    Disk usage is at 87% of total capacity. It reached the configured limit
    of 90% and has to fall below 85% before this node takes writes again.

Changing the config clears the verdicts. New limits are a deliberate act,
and should not be held back by the margin of a limit that no longer exists.

Both resources are now evaluated on every check instead of stopping at the
first failure, so a verdict is never left behind reporting a reading that
has since been superseded.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* feat: make the quota release margin configurable

5 points is a guess about how noisy a deployment's usage is, which is not
something one number can be right about: a node whose disk moves in
gigabyte steps needs a wider margin than one that creeps, and an operator
who wants the old flip-on-every-reading behaviour should be able to ask
for it.

`release_margin_percent` joins the rest of the quota config, so it seeds
from `QDRANT__STORAGE__QUOTAS__RELEASE_MARGIN_PERCENT`, replicates through
consensus, and changes with `PUT /quotas`. Defaults to 5 and is filled in
when a request omits it, so it always answers with the margin actually in
force rather than leaving the caller to assume one. `0` releases as soon as
usage is back under the limit.

`QuotaConfig` grows a hand-written `Default` for it, since deriving one
would have quietly defaulted the margin to 0 and disabled the hysteresis
for anyone constructing a config in code.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* refactor: leave the release margin unset by default, and hold verdicts in atomics

`release_margin_percent` is `null` unless someone sets it, rather than
materialising 5 into every config. A quota written today then does not pin a
number a later release may want to revise, and `{"enabled": false}` still
round-trips as itself. `QuotaConfig::limits` resolves it, next to `enabled`,
so enforcement never sees the unset case.

The verdicts move from a `Mutex<QuotaExceeded>` to one `AtomicBool` per
resource. They are judged independently and nothing reads them as a pair, so
the lock only added contention to the path every update takes; a verdict
that races a concurrent check is re-decided by the next one from a fresh
reading.

That also drops the tri-state. Only "was this over its limit" has to survive
between checks — whether a resource is enforced at all follows from the
config and the reading, so it is derived when reporting rather than stored.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* docs: drop a comment arguing with a design that was never here

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

---------

Co-authored-by: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-08-03 11:20:34 +02:00
xzfc b49c879720 cargo +nightly fmt (#10057) 2026-08-02 00:32:14 +02:00
xzfcandLuis Cossío a6a9143afc bitpacking_ordered: batched reads (#10038)
* bitpacking_ordered: batched reads

* Replace ranges with pairs

* "unsufficient" -> "insufficient"

---------

Co-authored-by: Luis Cossío <luis.cossio@outlook.com>
2026-08-01 01:51:54 +00:00
Luis Cossío f888786ec0 remove Clone implementation for MmapFile (#10047) 2026-07-31 11:51:44 -04:00
Luis Cossío b379ab2d87 [UIO] 2-stage DiskCache::reopen (#10031)
* AI: implement 2 stage reopen

* manual: simplification refactor

* AI: simplify further

* upd trait interface

* use closure instead of `&CachedReadFs`

* open a new remote for the tail fetch

* rename to `cached_file_info`

* only resize after fallible op

* use consistent remote openoptions
2026-07-31 09:51:08 -04:00
xzfc 75385df69f Remove dead code (#10030)
* Remove dead code

* Remove unused dependencies

* `allow(dead_code)` -> `expect(dead_code)`

* ast-grep: rule-tests/*-test.yml => tests/*-test.yml

For brevity.

* ast-grep: forbid allow(dead_code)
2026-07-30 20:59:31 +00:00
xzfc 39547e3a67 chore: bench_cache (#10028) 2026-07-30 11:58:06 +00:00
0a16a62f99 feat: io_uring setting to control which components use the io_uring backend (#10008)
* feat: `io_uring` setting to control which components use the io_uring backend

A few components have both an mmap and an io_uring variant reading the very
same files: the immutable dense vector storages, the single-file TurboQuant
storage, and the mmap payload storage. Until now the choice was a side effect
of `async_scorer` — a vector-search knob — plus, for the payload storage, a
feature flag that was parked off because io_uring is ~2x slower than mmap when
the data fits the page cache (#9310, #9409).

Add `storage.performance.io_uring`, optional, with two modes:

- unset (default): unchanged behaviour. The vector storages keep following
  `async_scorer`; the payload storage stays on mmap.
- `disabled`: no component uses io_uring.
- `auto`: a component uses io_uring when its memory placement is `cold` (data
  is left on disk, so reads hit the disk and there is something to gain), its
  feature flag allows it, and the kernel supports io_uring. Components meant to
  sit in RAM keep using mmap.

The decision lives in one place, `segment::common::io_uring::use_io_uring`, so
the openers no longer each reach for the async-scorer global. Kernel support is
now probed up front through `is_io_uring_supported()` instead of opening a file
and falling back on error.

`async_payload_storage` now defaults to on: it no longer decides anything by
itself, it only lifts the ban, and the payload storage no longer follows
`async_scorer` at all — so turning it on cannot silently move an existing
`async_scorer: true` deployment onto the slower path.

Which backend a component ended up on depends on the config, the placement and
the kernel at once, so report it in `SegmentInfo`: `vector_data[name].io_backend`
and `payload_storage_io_backend`, both `"mmap" | "io_uring"`, absent for
components that have no such choice.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* Trim comments, drop trivial tests

Two tests were only restating their own implementation: `test_mode_round_trip`
round-tripped the encode/decode pair next to it, and `test_io_uring_config`
checked that serde deserializes a two-variant enum. The mode matrix test stays,
it is the one that pins the semantics.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* Flatten `IoBackend` in OpenAPI, derive `JsonSchema` for `IoUringMode`

Per-variant doc comments on a plain string enum make schemars emit a `oneOf`
of anonymous single-value objects instead of a flat `enum`. Move the variant
descriptions into the enum doc, as `Memory` and friends already do.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* Update lib/segment/src/vector_storage/turbo/turbo_vector_storage.rs

Co-authored-by: Roman Titov <ffuugoo@users.noreply.github.com>

* Update lib/segment/src/types.rs

Co-authored-by: Roman Titov <ffuugoo@users.noreply.github.com>

* Update lib/segment/src/types.rs

Co-authored-by: Roman Titov <ffuugoo@users.noreply.github.com>

* Update lib/segment/src/types.rs

Co-authored-by: Roman Titov <ffuugoo@users.noreply.github.com>

* Update lib/segment/src/types.rs

Co-authored-by: Roman Titov <ffuugoo@users.noreply.github.com>

* upd openapi schema

* Update lib/common/common/src/flags.rs

Co-authored-by: Roman Titov <ffuugoo@users.noreply.github.com>

* Require kernel io_uring support in the async-scorer fallback

`use_io_uring` returned `get_async_scorer()` verbatim when the `io_uring`
setting is unset, so an enabled async scorer on a kernel without io_uring
opened the io_uring storage, failed, and fell back to mmap with an error
log per segment. Gate that branch on `is_io_uring_supported()` too, like
`Auto` already is, so the component just stays on mmap.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* upd openapi schema

---------

Co-authored-by: Claude Opus 5 (1M context) <noreply@anthropic.com>
Co-authored-by: Roman Titov <ffuugoo@users.noreply.github.com>
2026-07-28 21:17:36 +02:00
Arnaud GourlayandClaude Fable 5 d89d96b339 tests: skip clear_ram_cache eviction test on tmpfs (#10015)
POSIX_FADV_DONTNEED cannot evict pages of a tmpfs file: the page cache
is the backing store, so there is nothing to drop them to. On systems
where /tmp is tmpfs (Ubuntu 24.10+ default) the test fails with all
pages still resident. Detect tmpfs via statfs and skip.

Co-authored-by: Claude Fable 5 <noreply@anthropic.com>
2026-07-28 21:13:13 +02:00
6edf837e22 fix: evict page cache of files that are mapped twice (#9984)
* fix: evict page cache of files that are mapped twice

`clear_cache()` on a `memory: cold` vector storage was a silent no-op: after
optimization the whole storage stayed resident in the page cache.

`MmapFile` opened with `need_sequential` holds two mappings of the same file
(`MADV_RANDOM` + `MADV_SEQUENTIAL`), and `MADV_PAGEOUT` skips any page carrying
more than one page-table reference. Any page faulted through both mappings was
therefore never reclaimed, no matter which mapping was advised. Quantization is
one way to get there: it reads the raw vectors through the sequential mapping
while `populate_vector_storages()` populated the random one, so with
quantization enabled `matrix.dat` stayed 100% cached after the build, and
without it the same build evicted down to ~1%.

`POSIX_FADV_DONTNEED` alone does not help either, as it skips pages with any
page-table reference. So zap the page tables of both mappings first
(`MADV_DONTNEED` on a shared file mapping only drops the PTEs; the data stays
in the page cache and refaults on the next access) and then evict through the
file. Dirty pages are still kept, exactly as before — `MADV_PAGEOUT` did not
write back filesystem pages either — so callers that flush first, like
`SegmentBuilder::build`, get a complete eviction.

Also affects the payload storage (gridstore pages), the disk id tracker reader
and quantized multivector offsets, which open with `need_sequential` too.

Measured on a 200k x 256 build with quantization: `matrix.dat` 100% -> 0.0%
resident, whole segment 67% -> 2.4%.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* fix: satisfy clippy::cast_lossless in the eviction test

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* MADV_DONTNEED should not be safe

* Document why Madviseable::clear_cache might not be enough

---------

Co-authored-by: Claude Opus 5 (1M context) <noreply@anthropic.com>
Co-authored-by: xzfc <xzfcpw@gmail.com>
2026-07-27 17:00:04 +02:00
be543561e5 Add Logstore and Blobstore wrapper (#9673)
* Gridstore: introduce storage operating mode in config

Add a mode field to the gridstore config, selecting between the dynamic
mode (current behavior, the default) and the upcoming serverless mode.
The mode is specified through StorageOptions on creation, persisted in
config.json, and read back first when opening so the correct variant can
be selected automatically. Configs written before this field existed
deserialize as dynamic.

For now, selecting the serverless mode returns an error; the variant
itself is added in follow-up commits.

* Gridstore: move dynamic implementation into dedicated module

Mechanical move of the current Gridstore implementation into
gridstore/dynamic.rs as DynamicGridstore. The public Gridstore struct
becomes a thin wrapper holding a mode variant enum, propagating every
call into the selected variant. For now the enum only has the dynamic
variant; the serverless variant is added in follow-up commits.

No logic changes to the dynamic implementation itself: only visibility,
the config parameter now passed into open (the wrapper reads it first to
select the mode), and open_or_create staying on the wrapper.

* Gridstore: add serverless tracker

Add the append-only mapping tracker for the serverless storage mode.

The tracker file is a plain array of 16-byte mapping entries without any
header: the number of mappings is defined by the exact file length, and
the entry index is the point offset. The file starts empty and only ever
grows by appending, existing bytes are never rewritten. Mappings must be
set in monotonically increasing point offset order; skipped offsets are
backfilled as zeroed entries which decode as None.

New mappings are buffered in memory and appended with a single write per
flush. A flush with a stale target is a no-op so bytes are never written
twice. A torn trailing entry (file length not a multiple of the entry
size) is ignored when reading and truncated away when opening writable.

Unlike the dynamic tracker, the file is read and written directly with
positional file IO instead of memory mapping, as serverless environments
do not handle memory mapped files well.

* Gridstore: add serverless storage variant

Add the append-only gridstore variant for serverless deployments, which
restrict IO to appending to files: existing bytes can never be
rewritten, and IO is expensive so as few files as possible are used.

The variant stores all value data in a single page file next to the
serverless tracker and the storage config, three files in total. Both
data files start empty and only ever grow by appending; there is no
preallocation, no used-block bitmask and no gap/region bookkeeping.
Values are appended at put time at the next block aligned offset, with
the zero padding included in the write so it lands exactly at the end
of the file. Mappings are buffered and appended to the tracker with a
single write per flush, after the page file is synced, so a mapping on
disk never points at data that is not durable.

Values cannot be updated or deleted, and must be put at monotonically
increasing point offsets; violations are rejected before any data is
written. Files are read and written directly, never memory mapped.

The mode is selected through StorageOptions on creation and picked up
automatically from the persisted config when opening.

* Gridstore: serverless support in reader and view

Extend the read-only GridstoreReader and the GridstoreView with the
serverless mode, keeping both public types unchanged: like the writable
Gridstore they now hold a mode variant internally, selected
automatically from the persisted config when opening.

The serverless reader holds the tracker and page directly and reads the
files positionally, without memory mapping. A live reload re-reads the
mapping count from the exact tracker file length (there is no size
header), ignoring a torn trailing entry, and never truncates as it is
read-only. Value reads always go directly to the file, so newly
appended data is readable without remapping anything.

* Gridstore: document storage operating modes

* Gridstore: review fixes for the serverless mode

Hardening and cleanup from a review pass over the new serverless
storage variant:

- Batch the reader side iteration like the writer already did, instead
  of materializing tracker mappings for the full range in one go, which
  could transiently allocate gigabytes on large storages.
- Recover the append cursors when a positional write fails partway:
  truncate the file back to the tracked length so a retried append or
  flush never rewrites bytes that already landed in the file.
- Validate page addressability before appending value data, a rejected
  put must not grow the page file.
- Cross-check tracker and page consistency when opening: mappings that
  reference value data past the end of the page file (e.g. after a
  partial copy or restore) now fail fast instead of surfacing as
  opaque read errors per point.
- Reject value pointers into any page other than page 0 on the
  serverless read path with PageNotFound, matching the dynamic mode
  contract, instead of silently reading from a wrong location.
- Refresh the reported storage size on reader live reload even when no
  new mappings were flushed, unflushed value data may have grown the
  page file already.
- Validate configs read from disk: a corrupt config with zero sized
  blocks, pages or regions is now rejected when opening instead of
  panicking on a division by zero later.
- Classify rejected serverless puts as UnsupportedOperation, consistent
  with rejected deletes, so they don't surface as user-facing
  validation errors at the segment level.
- Deduplicate the compression dispatch into Compression::compress and
  Compression::decompress, and the serverless file create/open patterns
  into shared direct IO helpers, so the two modes and files can't
  silently drift apart.

* Gridstore: cover both operating modes in mode-agnostic tests

Parameterize the gridstore tests that exercise mode-agnostic behavior
over both the dynamic and serverless mode with rstest, using a
single and bulk put/get roundtrips, storage files, basic persistence,
corrupt config rejection, batched read congruence, reader live reload,
and the different block sizes.

Mode specific expectations branch inside the tests: expected file
names, storage size semantics (whole blocks vs exactly packed bytes),
value pointer layout (page spill over vs a single packed page), and
gaps (created by deletes in dynamic mode, by skipped puts in serverless
mode). Dynamic-only internals assertions are kept behind a mode check.

Tests around updates, deletes, page spanning, block reuse and other
dynamic-only behavior intentionally stay dynamic; the serverless
specific format invariants remain covered by the dedicated serverless
tests.

* Gridstore: port serverless specific tests from sibling branch

Source the serverless specific test cases that the
serverless-gridstore-updates branch added, adapted to the dedicated
variant implemented here (distinct file names, headerless tracker
with 16 byte entries, a single packed page without trailing padding,
and rejected re-puts):

- writes only ever append: tracker and page files only grow and
  previously written bytes stay byte-for-byte untouched
- new mappings land exactly at the end of the tracker file, which
  always covers the exact number of mappings
- mapping gaps are zero-padded on disk and survive reopening
- values are packed back to back at block aligned offsets, the page
  file ends exactly at the last value
- serverless mode never creates nor reports block flag files
- a flusher persists exactly the mappings that existed at its
  creation, later puts stay pending
- a config claiming the wrong mode fails loudly in both directions
  instead of loading the incompatible file format of the other mode

Tests around their mode switching, page spanning and tolerated deletes
don't apply to this design and are intentionally not ported.

* Gridstore: test serverless production risk scenarios

Add tests for the operational aspects that matter before serverless
mode goes to production, each covering a scenario that wasn't
evaluated yet:

- Replayed puts of already persisted offsets (a WAL redo after a
  crash where the flush completed but was never acknowledged) are
  rejected without appending anything, and max_point_offset is the
  exact offset a replay must resume at.
- The accepted crash case of a tracker file extended with zeroed
  bytes: the entries count as permanent None mappings, can never be
  put again, and the storage stays consistent and writable past them.
- The read-only reader never modifies the files: opening over a torn
  tracker tail, reading, iterating and live reloading leave both
  files byte-for-byte untouched.
- A multi-round put/flush/reopen cycle always exposes exactly the
  flushed prefix, with the mapping count matching the exact tracker
  file length and unflushed offsets reusable.
- An append beyond the maximum addressable block offset is rejected
  before writing anything, keeping retried puts from growing the page
  file unboundedly.

* Gridstore: rename serverless mode to append-only, split into module

Rename the mode after its defining characteristic instead of its
deployment target: files only ever grow, existing bytes are never
rewritten. Renames Mode::Serverless to Mode::AppendOnly (persisted as
"mode": "append_only") and the on-disk file names to
append_only_tracker.dat and append_only_page_0.dat. The serverless
deployment motivation stays in the documentation.

Also split the single 2300 line serverless.rs into an append_only
module with dedicated files for the storage, page, view, reader and
tests.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

* Use universal IO in Gridstore

* Include upstream preopen logic in new Gridstore variant

* Gridstore: buffer append-only value writes until flush

In append-only mode, put previously wrote the value data to the page
file right away, one write operation per put, while mappings were
already buffered and batch persisted on flush. Buffer value writes the
same way: both the value and its mapping now only land on disk once a
flush cycle executes.

This batches all new value data into a single write operation per
flush, which is significantly more efficient on S3 based storage where
every write is a costly operation. A flush now performs exactly two
writes: one appending all buffered value data to the page file, one
appending all pending mappings to the tracker file, in that order, so
a mapping on disk never points at value data that is not durable.

The page mirrors the tracker's pending mechanism: an in-memory buffer
that is byte for byte the next append (zero padding between block
aligned values included), a watermark captured at flusher creation so
puts made during a flush stay buffered, a stale-flush no-op guard so
appended bytes are never written twice, and truncate-back recovery on
failed writes. Reads transparently serve buffered values from memory.

As a side effect, a crash between flushes now leaves nothing on disk
at all, where the write-through approach left orphaned value bytes in
the page file. The buffered data is held in memory until the next
flush, bounded by the flush cadence.

Universal IO filesystem handles are now required to be Send + Sync, so
the flusher closure can carry one to grow the page file at flush time;
all existing backends already satisfied this.

* Gridstore: rename inner DynamicGridstore to Gridstore

The dynamic variant keeps the Gridstore name; the outer dispatching type
will be renamed to Blobstore in a follow-up. Until then the inner type is
referred to as dynamic::Gridstore to distinguish it from the outer type.

* Gridstore: rename append-only variant to Arenastore

The append-only variant stores all value data in a single ever-growing
page, allocating space by appending, hence: arena store.

* Gridstore: rename outer storage type to Blobstore

The outer type dispatching between the two storage variants is now called
Blobstore, being more generic than Gridstore. This frees up the Gridstore
name, which now exclusively refers to the dynamic mode variant, next to
Arenastore for the append-only variant. Storage components keep using the
outer type, so they now use Blobstore.

The gridstore crate name, GridstoreError, and the persisted names
(config.json mode, payload config storage_type) are unchanged.

* Gridstore: split Gridstore and Arenastore into dedicated modules

The outer module is now blobstore, matching the Blobstore type it
defines. The two storage variants each get their own submodule: the
dynamic Gridstore moves from dynamic.rs into gridstore/ with its reader
and view extracted from the shared files, mirroring the arenastore/
module (previously append_only/) which already had this layout.

* Rename gridstore crate to blobstore

The crate is named after the outer Blobstore storage type it provides.
The gridstore name lives on in the dynamic mode variant. GridstoreError
and the persisted names (config.json mode, payload config storage_type)
are unchanged.

* Arenastore: pack values back to back across multiple pages

Drop the block alignment from the append-only mode: values are packed
byte to byte, without blocks, and the tracker offset is now a plain byte
offset within the page. Blocks and regions are dynamic mode concepts;
their page size constraints no longer apply to append-only configs.

Bring back support for multiple pages. Once appending a value would
grow the current page beyond the configured page size, a new page is
started, bounding the size of and the number of appends to each file:
object stores like S3 Express limit the number of appends per object.
A value larger than the page size gets a page of its own; values never
span pages.

A rollover creates the new, empty page file at put time; the value data
itself stays buffered until the next flush, which appends to each
touched page with a single write, using per-page watermarks captured at
flusher creation. The reader scans for consecutively numbered page
files when opening, validates the most recent mappings against them,
and adopts pages created since on a live reload.

* Blobstore: rename dynamic mode to mutable

Rename Mode::Dynamic to Mode::Mutable, and the persisted config value
with it: config.json now writes "mode": "mutable". There is no
compatibility alias for "dynamic", released versions never wrote the
mode field (a missing field still defaults to mutable), only unreleased
storages did.

The Gridstore type and module names for the mutable variant are
unchanged.

* Fix Edge compilation due to package rename

* Review remarks

* Extract Gridstore preopen into module

* Rename Arenastore files

* Use universal IO for append operations

* Rename GridstoreError to BlobstoreError

The error type belongs to the Blobstore crate and is shared by both the
Gridstore and Arenastore variants, so it follows the crate naming. Also
update the user-facing error messages that referred to the old name.

* Split config into per-variant types

* Rename Arenastore to Logstore

Rename the Arenastore type to Logstore, including the reader, view,
config, module and variant names. The storage file names follow:
log_page_{n}.dat and log_tracker.dat. The persisted mode tag stays
"append_only".

* Move bitmask module into the Gridstore variant

The bitmask tracks free blocks, which only exists in the mutable mode.
Move the module from the crate root into the Gridstore variant that
owns it. It stays re-exported at the crate root because the bitmask
benchmark needs a public path.

* Move pages module into the Gridstore variant

Like the bitmask, the block based pages module is only used by the
mutable mode. Move it from the crate root into the Gridstore variant
that owns it. The Logstore variant has its own page implementation.

* Use universal IO for every Logstore operation

Replace the direct_io module with universal IO in the append-only
tracker, making the whole Logstore go through a universal IO backend
bounded by UniversalRead and UniversalAppend:

- The tracker is generic over the backend now. Reads go through
  UniversalRead with the caller's access pattern, flushes land as one
  atomic append with the same offset compare-and-swap recovery as the
  pages: a retried append after a lost acknowledgement is adopted
  instead of appended twice. A torn trailing entry is still truncated
  away on writable open, through a fresh handle since shrinking is not
  supported through an open one.
- The reader now schedules a prefetch for the tracker file too, it no
  longer bypasses the backend.
- The config write, clear and wipe use the backend file operations
  instead of local filesystem calls, matching the Gridstore variant.

* Batch reads in Logstore read_values

Apply the same batching logic as the Gridstore variant: resolve all
mappings first, then fetch the value data, both through the backend's
read pipeline so async backends can serve the reads in parallel.

The tracker gains a batched lookup mirroring the mutable tracker's
iter, serving pending mappings and out of range point offsets directly
from memory. The pages gain a batched value read; unflushed values are
served from the in-memory buffers, and since values never span pages
each value is a single read without reassembly.

Like in the Gridstore variant, the callback may now be invoked in a
different order than the requested point offsets.

* Better describe logstore live reload ordering

* use enum for options, swap `*Options`<->`*Config` naming

* don't wrap enum in struct

* ditch unused `StorageConfig`, make deserialization more ergonomic

* rename `*Options`->`*Config`

* make `preopen` non-blocking

* fixup! ditch unused `StorageConfig`, make deserialization more ergonomic

* fixup! use enum for options, swap `*Options`<->`*Config` naming

* fixup! don't wrap enum in struct

* fix rebase

* use `populate` param in Logstore

* test: failing repro of stale page after live reload across rollover

A reader that live-reloads between a page rollover and the following
flush adopts the new, still empty page. The previous page is then no
longer the last one and is never reloaded again, so the tail that the
next flush appends to it stays invisible to the reader forever:

    value pointer at byte 100 with length 100 is out of range

AppendOnlyPages::live_reload only reloads the last held page, assuming
earlier pages never change once a newer page exists. But the rollover
creates the new page file eagerly at put time, while the previous
page's buffered tail only lands at the next flush (see
test_rollover_writes_no_value_data_before_flush), so a page can keep
growing on disk after its successor exists.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

* fix: reload all pages that grew

* use Fs in `open_or_create`

* fix: publish tracker mappings only after the pages reload

`AppendOnlyTracker::live_reload` observed the mapping count and made it
visible in one step, before `LogstoreReader::live_reload` reloaded the
pages. Every failure path in the page reload -- `list_files`, reopening a
grown page, opening an adopted one, the truncation check -- therefore left
the reader with mappings referencing value data it never loaded, so reads
in the new offset range fail until a later reload happens to succeed. The
edge refresh loop keeps a segment whose reload failed, expecting it to keep
serving its pre-refresh state, which it then does not.

Split observing from publishing: `reload_count` refreshes the handle and
returns the count as a `PendingReload` token, `commit_reload` publishes it.
The reader still observes the tracker first, as the writer persists pages
before the mappings referencing them, but only commits once the pages are
loaded. Reopening without committing is harmless: reads stay bounded by the
unchanged count, and the bytes below it never change.

A partial failure inside the page reload needs no unwinding, pages running
ahead of the tracker is the safe direction.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* perf: batch the value reads in Logstore iteration

`LogstoreView::iter_range`, the path behind `Logstore::iter` and
`LogstoreReader::iter`, fetched the mappings for the whole range with a
single read but then read the values themselves one at a time, serially.
Gridstore routes its `iter` through `read_values` and pipelines both stages,
so a full scan of an append-only storage was the one read path without
batching -- one blocking round trip per value on the object store backends
this variant exists for. It is reached by payload storage iteration and by
the payload index build, which scans every payload.

Feed the pointers into `read_batch_values` instead, keeping the single
contiguous tracker read, which is better than the per-offset pipeline
scheduling Gridstore does on that side.

Values are now delivered through the read pipeline, so the callback may be
invoked out of order, as it already could be for Gridstore's `iter` and for
`read_values` in both variants. Both segment callers are order independent.
Tests that happened to rely on the mmap backend completing reads in
scheduling order now sort before comparing.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* test: don't run the failed-page-reload test on Windows

The test shrinks a page file out of band to make the page reload fail, but
Windows refuses to resize a file while the reader holds it mapped, which it
does by construction here: "the requested operation cannot be performed on a
file with a user-mapped section open". The panic is on the injection itself,
the code under test never runs.

There is no portable injection. Truncating a page the reader holds is what
the check under test detects, so the mapping cannot be avoided; failing the
adopted page open instead needs a listed but unopenable file, and
`local_list_files` descends into matching directories rather than listing
them; failing the directory listing needs the storage directory removed,
which Windows also refuses while pages are mapped.

The storage itself is fine on Windows, its append path grows mapped pages
there and every other Logstore test passes. The logic under test is platform
independent and stays covered elsewhere, with the tracker half of the
guarantee pinned by `test_live_reload`, which runs on every target.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

---------

Co-authored-by: generall <andrey@vasnetsov.com>
Co-authored-by: Claude Fable 5 <noreply@anthropic.com>
Co-authored-by: Luis Cossío <luis.cossio@outlook.com>
2026-07-26 20:23:28 +02:00
xzfc 48e710ce0b Cleanup UniversalRead methods interface (#9934)
* use common::generic_consts::{Random, Sequential};

* UniversalRead::read_batch: generic over E

* UniversalRead::read_batch: pass `AccessPattern` as ZST arg

* UniversalRead::read_bytes_iter: pass `AccessPattern` as ZST arg

* UniversalRead::read_iter: pass `AccessPattern` as ZST arg

* UniversalRead::read: pass `AccessPattern` as ZST arg

* UniversalRead::read_bytes: pass `AccessPattern` as ZST arg
2026-07-22 15:28:07 +00:00
xzfc 7e99cdd86a UioResult (#9933) 2026-07-22 14:34:33 +00:00
xzfcandLuis Cossío 9bb75ea2d1 Batched ConditionChecker (#9740)
* ConditionChecker::check_batched: trait + ConditionCheckerEnum

* check_batched for OptimizedFilter

* OnDiskPointToValues::values_iter_batch: improve performance

* OnDiskPointToValues::values_iter_batch: update interface

Accept bitvec, call on every point, pass UserData.

* check_batched for geo index

* geo_index tests: add same_geo_index_between_points_with_dups_test

Catches broken load_from_on_disk/for_all_points_values.

* check_batched for map index

* check_batched for numeric index

* check_batched for full-text index

* tests for check_batched

* Review fixups

- default_check_batched: avoid running pred twice at boundary
- condition_checker: use explicit match over matches!/if-else
- Partitioner: use assert! over debug_assert!

Co-authored-by: Luis Cossío <luis.cossio@outlook.com>

* ConditionChecker::check_batched: &mut self -> &self

* ConditionChecker::check_batched: make mandatory

---------

Co-authored-by: Luis Cossío <luis.cossio@outlook.com>
2026-07-21 19:19:59 +00:00
Luis Cossío 23321085e8 [io-bridge] split large reads into unordered chunks (#9896)
* read large files in unordered chunks

* use S3 error

* use a vec of ranges to track scattering

* self nits

* use less concurrent chunks
2026-07-21 11:21:32 -04:00
Arnaud GourlayandClaude Fable 5 6ac465dfda Tests: use SmallRng for RNG-bound test data generation in common (#9888)
The persisted_hashmap and disk_cache tests generate their datasets with
StdRng (ChaCha12 in rand 0.10). String keys draw one random_range call
per character, so the crypto generator dominated the test runtime:
test_k_str_* drop from ~3.3s to ~1.4s each with SmallRng (Xoshiro256++).

Assertions are self-consistency checks (write then read back), so the
changed sequences carry no retuning risk.

Co-authored-by: Claude Fable 5 <noreply@anthropic.com>
2026-07-17 18:26:08 -04:00
Luis Cossío 5c269b9525 Misc nits (#9894)
* use `WithVector::is_enabled`

* suppress unused var lint

* fix non linux "useless mut" lint
2026-07-17 15:53:04 -04:00
Arnaud GourlayandClaude Fable 5 c196d2eb1a Benches: use SmallRng instead of ChaCha12-based generators (#9887)
* Benches: use SmallRng instead of ChaCha12-based generators

All benchmarks used StdRng or rand::rng() (ThreadRng), both backed by the
ChaCha12 block cipher in rand 0.10. Benchmarks do not need crypto-strength
randomness, and several draw random values inside the timed closure, so
cipher work was included in the measurement itself.

Switch every bench target to SmallRng (Xoshiro256++), and key the HNSW
graph cache and sparse index cache by RNG algorithm so stale caches built
from the old generator are not reused against newly generated vectors.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

* Benches: replace free-function rand::random with local SmallRng

Addresses review: rand::random draws from the thread RNG (ChaCha12),
including inside the timed loop of the pq score benchmark.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

---------

Co-authored-by: Claude Fable 5 <noreply@anthropic.com>
2026-07-17 17:22:27 +02:00
Andrey VasnetsovandClaude Fable 5 0eedad2e38 DiskIdTracker: RAM-resident is_uuid stored-bitmask sidecar + module split (#9878)
* DiskIdTracker: RAM-resident is_uuid stored-bitmask sidecar + module split

Move the is_uuid flags out of the i2e file into a separate
id_tracker.is_uuid file in the compact StoredBitmask format (#9871),
loaded whole into RAM as a RoaringBitmap on open and prefetched in
preopen, so slot decoding never reads the flag from disk. Bump the
on-disk format version to 2 (DiskIdTracker is unreleased; no migration).

Add StoredBitmask::read_ones() in common to normalize any stored
encoding into a bitmap of set positions, with logical_len validated
against the u32 position space at open.

Restructure disk_id_tracker: read_only.rs becomes read_only/{mod,
lifecycle,live_reload,id_tracker_read} mirroring the immutable tracker,
and reader.rs becomes reader/{mod,lifecycle,lookup,iter}.

Also unbox the DiskMappingsRef iterators (impl Iterator instead of
Box<dyn>), and make IdTrackerRead::iter_internal_versions fallible so
the read-only disk tracker propagates storage errors instead of
silently truncating; its implementation now reads the versions file in
one pass (cleanup-on-open drains it anyway).

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

* Split disk_id_tracker mod.rs into lifecycle / read / write files

Mirror the read_only/ layout: mod.rs keeps the struct and resident-RAM
helpers, lifecycle.rs the build/open paths, id_tracker_read.rs the
DiskMappingsSource + IdTrackerRead impls, id_tracker.rs the mutable
IdTracker impl. Code moved verbatim; only imports and a field doc touched.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

* Tighten disk_id_tracker docstrings around guarantees

State contracts (residency, laziness, error semantics, atomicity)
instead of narrating which structures hold or use what.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

---------

Co-authored-by: Claude Fable 5 <noreply@anthropic.com>
2026-07-17 09:31:14 +02:00
Andrey VasnetsovandClaude Fable 5 a6ea303e4b Compact stored bitmask for on-disk field index deleted masks (#9871)
* Compact stored bitmask for on-disk field index deleted masks

Add StoredBitmask: a compact persisted bitmask written and read as a
whole. The payload is a roaring bitmap of whichever bit value is the
minority (mostly-0 and mostly-1 masks both stay tiny), falling back to
raw dense bits when roaring would not be smaller, so the file is never
larger than the dense representation. Files are replaced atomically via
UniversalWriteFileOps::atomic_save; there is no in-place mutation.

Use it for the write-once "no values" masks of the on-disk numeric,
geo, map and full-text indexes, replacing the raw dense bitslice files
sized at point_count/8 bytes regardless of content.

Writing the new format is gated by the compact_bitmask feature flag
(default off; enabled by `all` and `serverless_compatible`). Reading is
format-agnostic regardless of the flag: the compact deleted_mask.bin is
tried first, then the index-specific legacy file, so old segments stay
readable and flag-off builds produce byte-identical legacy files.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

* Split save_bitmask into named helpers

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

* Regenerate OpenAPI spec for compact_bitmask feature flag

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

* Address review findings on stored bitmask

- Avoid u64 overflow in the payload bound check when opening a mask
  with a corrupted payload_len.
- Reject roaring payload positions beyond logical_len at read time,
  enforcing the BitmaskContent range contract for corrupted files.
- Remove the opposite-format mask file after a successful save, so a
  rebuild with a flipped compact_bitmask flag can't leave a stale
  compact file shadowing the fresh legacy one (or an orphaned legacy
  file next to a compact one).
- Make the compact-open numeric test tolerate builds that already
  wrote the compact format.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

---------

Co-authored-by: Claude Fable 5 <noreply@anthropic.com>
2026-07-16 17:47:08 +02:00
Luis Cossíoandxzfc 2a92bcf3a3 [UIO] Increase PHF prefetch (#9842)
* increase phf prefetch

* no duplicate comment

Co-authored-by: xzfc <5121426+xzfc@users.noreply.github.com>

---------

Co-authored-by: xzfc <5121426+xzfc@users.noreply.github.com>
2026-07-15 09:54:08 -04:00
Tim Visée 71e6c70458 Universal IO: append to file (#9720)
* universal_io: add UniversalAppend for atomic single-operation appends

Growing a file previously took a separate set_len + reopen + write dance
(bypassing universal_io and leaving a zero-filled window on crash), and
there was no way to express appends for backends without random-offset
writes.

UniversalAppend::append grows the file by writing at the current end of
file in one atomic grow+write operation and returns the offset at which
the data landed; append_batch lands multiple buffers contiguously in as
few operations as the backend allows. flusher() moves from
UniversalWrite into a new UniversalFlush supertrait so append-only
handles can require it without duplicating the method.

Local backends, both single-syscall:
- MmapFile appends through a dedicated O_APPEND fd (every write(2) /
  writev(2) is an atomic grow+write at EOF), then remaps via reopen().
  Its flusher also fdatasyncs after appends, since msync alone does not
  persist file-size metadata.
- IoUringFile appends via pwritev2(RWF_APPEND). O_APPEND is not an
  option there: on Linux, pwrite on an O_APPEND fd appends regardless
  of the given offset, which would break positioned writes on clones
  sharing the fd.

Concurrent appenders are out of contract (single logical writer);
object-store backends surface the new AppendOffsetConflict error and
recover via reopen() + retry.

* io_bridge: add AsyncWrite/AsyncAppend and appendable BlobFile

Add the write-side backend traits reserved next to AsyncRead: AsyncWrite
(create/remove/save) powers a UniversalWriteFileOps impl on BlobFs
(create-or-truncate put, delete, atomic whole-object save; directory ops
are no-ops), and AsyncAppend — a single-request append where the offset
must equal the current object size, acting as a compare-and-swap token —
powers UniversalAppend on BlobFile.

BlobFile caches the object size across appends (one HEAD for N appends;
a missing object counts as empty so the first append creates it),
concatenates batches into a single request, and drops the cache on
reopen() — the documented recovery path after AppendOffsetConflict. Its
flusher is a no-op: appends are durable once the backend acknowledges
them.

* io_bridge_object_store: native single-request S3 append

object_store has no append support, so issue the PutObject +
x-amz-write-offset-bytes request ourselves, reusing the store's
credential chain (AmazonS3::credentials) and object_store's SigV4
AwsAuthorizer, which signs every header present on the request — no
hand-rolled signing and no direct reqwest dependency. The offset doubles
as a compare-and-swap token: a mismatch (400 InvalidWriteOffset, or 412
on some S3-compatibles) maps to AppendOffsetConflict.

The write-offset append API exists on AWS S3 Express One Zone directory
buckets and compatible stores (e.g. MinIO AiStor) — plain S3 Standard
buckets reject it, and real Express zonal endpoints / session auth are
not verified yet; MinIO-AiStor-compatible stores are the primary target
for now. GCS and Azure sources simply do not implement AsyncAppend.

ObjectStoreSource carries an AppendContext (HTTP client + object URL
base + signing region) built per backend from its config, and gains a
generic AsyncWrite impl (single-put create/save, delete). A test-only
multi-request CAS emulation over InMemory exercises the BlobFile append
stack hermetically; an end-to-end flow against a real append-capable
store is gated behind S3_APPEND_INTEGRATION_TEST=1.

* simple_disk_cache: write-through UniversalAppend for DiskCache

Append to the remote (the single grow+write operation), then write the
same bytes through into the local mirror so tail reads do not re-fetch
what was just uploaded. LocalState::append_local keeps the fetched
bitmap accurate: blocks fully covered by the appended range are marked
fetched, and the pre-append partial tail block — which resize() drops
because set_len zero-fills its gap — is re-marked only when its prefix
was already fetched. If the mirror turns out stale (the remote grew
behind our back), append falls back to resize-only and lazy fetches
heal the gap on the next read.

Writeable opens are now allowed on DiskCacheFs solely to enable append;
DiskCache still never implements UniversalWrite. The writeable flag
propagates to the remote handle, which is opened buffered instead of
O_DIRECT: appends write through the page cache, which O_DIRECT reads on
the same fd would fight (and IoUringFile rejects appends on
prevent_caching handles). The remote-immutability docs are relaxed to
append-only with an immutable prefix, matching what reopen() already
assumed.

Includes a full-stack composition test: DiskCache write-through over
BlobFile offset tracking over an in-memory object store.

* io_bridge_object_store: build the append HTTP client lazily

Opening a source from an AwsConfig eagerly built the reqwest client
(TLS setup, connection pool) even when append was never used. Keep the
AppendContext construction to pure config (allow_http flag, object URL
base, signing region) and build the client on first append instead,
cached in an Arc<OnceLock> shared across clones of the source — and
thus across the file handles opened from it. Sources that never append
now pay nothing; client-construction errors surface on the first append
instead of at open.

* universal_io: test that append grows the regular file on disk

The conformance suite reads appended bytes back through universal-io
handles; also assert the underlying regular file itself — created
outside universal_io, verified with plain fs reads — for both local
backends.

* Mention why we use custom HTTP client, object_store crate has no support

* io_bridge_object_store: reject appends unconfirmed by the size header

A store without write-offset support may accept the signed PutObject as
a plain put — replacing the object with just the appended bytes — and
return 2xx (community MinIO did exactly this before 2025-05, commit
minio/minio@6d18dba9). The old success path fabricated the new length
when x-amz-object-size was missing, so the destruction stayed invisible
while every subsequent append repeated it.

Require the x-amz-object-size response header (returned by AWS and
MinIO AiStor appends) for any append at offset > 0 and fail loudly
without it. Offset-0 appends are equivalent to a whole-object write, so
they remain valid either way — a misconfigured store now fails on the
second append instead of never.

* io_bridge_object_store: honor endpoint/region env vars for appends

With AwsCredentials::Default the store is built via
AmazonS3Builder::from_env, which honors AWS_ENDPOINT_URL_S3,
AWS_ENDPOINT_URL, AWS_ENDPOINT, AWS_REGION and AWS_DEFAULT_REGION — but
append_context derived the append URL and SigV4 region only from the
typed config fields. An env-configured deployment would read from one
host while signing and sending appends to
https://{bucket}.s3.us-east-1.amazonaws.com.

Resolve the append endpoint and region the same way build_store does:
explicit config first, then (default credential chain only) the same
environment variables, with AWS_ENDPOINT_URL_S3 taking precedence as in
from_env. The resolution is a pure function over an injected env lookup
so the test does not touch process-global environment state.

* simple_disk_cache: delegate the append flusher to the remote

DiskCache's UniversalFlush impl was an unconditional no-op, justified by
object-store appends being durable on acknowledgement — but the impl is
generic over any appendable remote, and for local remotes (MmapFile,
IoUringFile, exactly the compositions the tests instantiate) that
silently dropped the fdatasync the UniversalAppend contract requires:
append, flush Ok, power loss, appended bytes gone.

Delegate to the remote's flusher once the cache is materialized: local
remotes get their sync, object-store flushers remain no-ops, and a
never-materialized cache has made no appends so a no-op stays correct.

* io_bridge_object_store: retry transient append failures

The append RPC was a single unretried HTTP attempt, while every other
request in this stack goes through object_store's retry layer — a
routine transient 503 SlowDown or connection reset failed the append
hard where a concurrent read would have silently recovered.

Retry connection errors, 5xx and 429 up to three attempts with a short
linear backoff, re-signing per attempt (the SigV4 signature embeds the
request date). Retrying is safe because the write offset is a
compare-and-swap; the one ambiguity — an attempt that landed but whose
acknowledgement was lost — surfaces as a write-offset conflict on the
retry, which is reconciled with a HEAD: under the single-writer
contract, an object size of exactly offset + data_len proves the tail
is ours, so the append reports success instead of a spurious conflict
(whose reopen-and-retry recovery would duplicate the record).

* universal_io: forward TypedStorage::flusher for any UniversalFlush

The flusher forwarding lived in TypedStorage's S: UniversalWrite impl
block, so append-only storages (DiskCache, BlobFile — UniversalAppend +
UniversalFlush but not UniversalWrite) offered append through the
wrapper while the durability flusher the append contract mandates was
unreachable without going through .inner.

Move it to an S: UniversalFlush block: UniversalWrite implies
UniversalFlush, so existing callers resolve unchanged, and duplicating
the method instead would have hit E0592 on backends implementing both —
the very ambiguity UniversalFlush was extracted to avoid.

* io_bridge_object_store: surface unbuildable append requests as errors

Request building could panic on two reachable paths: url accepts URIs
the http crate rejects (IPv6 zone identifiers, URIs beyond u16::MAX
bytes), and AppendContext::new is public so the object URL base is not
guaranteed to be a base URL. Both expects become S3Config errors, so a
configuration edge case fails the append instead of panicking the
thread driving the bridge runtime.

* simple_disk_cache: don't fail appends the remote already committed

append_impl committed to the remote first and returned Err when the
subsequent local-mirror update failed (e.g. ENOSPC on the cache volume)
— indistinguishable from "nothing was appended", so a retrying caller
would duplicate the record on the remote.

The mirror is cache maintenance, not part of the append: on a failed
write-through, log and degrade to bare growth so lazy fetches heal the
unmarked blocks (safe — blocks are only marked fetched after their
bytes landed). Only an unresizable mirror still surfaces an error, and
the UniversalAppend contract now documents that an append Err does not
guarantee nothing was appended: reopen() and re-check the length before
retrying.

* universal_io: bounds-check positioned io_uring writes against EOF

The UniversalAppend contract states that UniversalWrite::write beyond
the end-of-file fails and append is the only growth path — mmap
enforces it, but IoUringFile's write/write_batch/write_multi were
unchecked pwrites that silently extended the file with a zero-filled
hole, inflating subsequent append offsets.

Check every positioned write against the file length (fstat once per
call), matching mmap's OutOfBounds semantics, and generalize the
regression test to run on both local backends including the batched
path.

* io_bridge: reject appends on handles opened without writeable

BlobFs::open dropped OpenOptions entirely, so a BlobFile opened with
writeable: false still accepted appends — mmap and DiskCache enforce
the writeable requirement, the blob backend silently didn't, and a
stray append through a nominally read-only handle would mutate a shared
object.

Thread OpenOptions::writeable into BlobFile and reject appends with
PermissionDenied when it is unset, mirroring the other backends.
Directly-constructed handles (BlobFile::new/open, which take no
OpenOptions) remain writeable. With every backend now enforcing the
flag, the UniversalAppend contract drops its 'where the backend
enforces open modes' hedge.

* simple_disk_cache: answer empty appends from the mirror

An empty append still went through remote.append_batch, so it returned
the remote's live end-of-file — which can diverge from what this
handle's len() and reads observe when the remote grew behind our back —
while leaving the stale mirror unhealed (unlike a non-empty append in
the same state, which resizes).

Accept empty appends early: return the mirror length without touching
the remote at all, keeping the answer consistent with the handle's own
view. The trait contract now spells out that empty appends return the
handle's view of the end of file without growth I/O.

* universal_io: grow the mmap in place after appends

Every mmap append ended in a full reopen(): an open+fstat+close by path
just to learn the new length, and — on the non-Linux fallback, which
rebuilds the mapping with the open-time populate flag — a re-population
of the ENTIRE file per append, making appends O(file size) for handles
opened with Populate::Blocking. Populating after an append is pointless
anyway: we just touched the data we wrote.

Extract the remap machinery into remap_to() (reopen() keeps its exact
semantics, populate included) and add grow_mapping(): a stat-free grow
that never re-populates. Appends learn the new length from a single
fstat on the already-open O_APPEND fd — kept rather than trusting the
mapping length, which is stale exactly in the externally-grown-remote
scenario the disk cache heals through lazy fetches (the foreign-growth
tests catch the difference). The mirror's resize() passes the length it
just set_len'd, dropping its stat round-trip entirely.

Per small append this is write+fstat+mremap, down from
write+open+fstat+close+mremap, with no populate anywhere.

* universal_io: share the mmap append fd across clones

The flusher captured the per-clone append_file at flusher-creation
time, so a flusher obtained from a sibling clone — or created before
the handle's first append — msynced the shared mapping's data pages but
skipped the fdatasync that persists the appended file size: a
half-persist where a crash loses the acknowledged tail even though a
flusher ran after the appends (writer thread + long-lived flush-worker
clone is exactly the natural WAL shape).

Store the fd in an Arc<OnceLock> shared by all clones and read it at
flush time instead of capture time: any clone's append makes every
handle's flusher sync the size metadata, whatever the clone/flusher
creation order. Initialization races between clones keep exactly one
fd. No hot-path cost: reads and positioned writes never touch the cell,
and the append path pays one atomic load next to its syscalls. The
interior mutability also lets append_fd take &self.

* universal_io: document the clone remap hazard truthfully

The remap SAFETY comment claimed moving is safe "since we are holding
&mut self" — which says nothing about clones: they share the mapping
but keep their own raw ptr/len copies, so after a moving (or, on
non-Linux, replacing) remap a sibling clone's next read dereferences an
unmapped address. The trait contract understated the same hazard as a
concurrent-read constraint, while the UB persists after append returns.

State the contract once on MmapFile (clones must reopen before reading
after any growth; a stale clone read is undefined behavior, not a stale
view), correct the SAFETY argument to rely on it explicitly, annotate
the as_bytes unsafe blocks that depend on it, and sharpen the
UniversalAppend contract bullet accordingly. Making clones structurally
safe (resolving ptr/len through the shared Arc) is deliberately left as
a separate change.

* universal_io: share the vectored append machinery between backends

The IOV_MAX-chunking / EINTR-retry / WriteZero / advance_slices loop
existed twice — as local_file_ops::write_all_vectored (mmap) and
inlined around pwritev2 in IoUringFile::append_slices — along with a
verbatim collect/cast/filter-empties preamble in both append_batch
impls. Two copies of subtle short-write handling introduced by one
branch will diverge the first time only one of them gets a fix.

Add an io::Write adapter whose write_vectored issues
pwritev2(RWF_APPEND), letting the io_uring append delegate to the
shared write_all_vectored, and hoist the slice collection into
local_file_ops::collect_append_slices. IOV_MAX becomes private to the
one function enforcing it. No behavior change; the existing conformance
tests (including the beyond-IOV_MAX batch) cover both backends through
the shared path.

* io_bridge_object_store: add s3_express to the test config helper

The AwsConfig struct gained the s3_express field; update the
resolve-endpoint test helper accordingly.

* universal_io: run the append conformance suite over the S3 stack

Promote the backend-generic UniversalAppend battery (offsets, batches
across IOV_MAX, empty appends, read-after-append, reopen visibility,
flusher) from a private test into universal_io::conformance, exposed
under the testing feature so backend crates can run the identical
suite. mmap and io_uring keep running it as before; the object-store
bridge now runs it too, over BlobFs/BlobFile with the in-memory
offset-CAS append emulation — so local file system and S3 append
behavior are asserted by the same test. The real write-offset RPC
remains covered by the gated test_native_append_flow integration test.

* Swap order

* universal_io: disambiguate the io_uring crate import

The import reorder dropped the leading `::`, making `io_uring`
ambiguous with this very module (pulled into scope by the
`use super::*` glob) and breaking the build.

* io_bridge: don't materialize the mock object on rejected appends

MutableMockSource::append called get_or_insert_with before validating
the offset, so a rejected stale append against a missing object left an
empty entry behind (exists() flipping true) — a fidelity gap versus the
real backends, where a rejected append has no side effects. Check the
offset against the current length first and only materialize the buffer
on a match.

* universal_io: disambiguate the io_uring crate import

Restore the leading `::` on the io_uring crate import — without it the
name is ambiguous with this very module, which the `use super::*` glob
pulls into scope, and the crate fails to compile. Matches the sibling
files (pool.rs, runtime.rs), which already import via `::io_uring`.

* io_bridge_object_store: treat 404 under a nonzero append offset as a conflict

A missing object while the handle expected a nonzero end-of-file is a
stale view (the object was deleted behind our back) — the same
situation as an offset mismatch, with the same reopen-and-retry
recovery, and it is exactly what the in-memory emulation and the
io_bridge mock already report. The RPC path mapped every 404 to
NotFound instead, so the three implementations disagreed on the same
logical case. Keep NotFound for offset-0 appends, where a 404 is a
genuine missing-target error (e.g. a missing bucket) that retrying
cannot heal.

* Preallocate vector

* universal_io: disallow appends through the disk cache

Appends must go directly to the backing storage (mmap, io_uring, S3) —
the disk cache is strictly read-only again. Remove DiskCache's
UniversalAppend/UniversalFlush impls and the mirror write-through
machinery (LocalState::append_local), reject writeable opens at
DiskCacheFs::open, and drop the writeable/prevent_caching plumbing that
existed solely for cached appends, restoring read-only remote handles.

Attempting to append through the cache is now a compile-time error (the
trait impl no longer exists), and opening a cached handle writeable is
rejected at runtime, covered by a test in each backend variant.

* universal_io: make append idempotent via caller-supplied offset

Append now takes the byte offset where the data must land:
append(offset, data) -> Result<()>. Every backend validates that the
offset equals the current end of file before writing (mmap and io_uring
fstat the fd, object stores validate server-side via
x-amz-write-offset-bytes); on mismatch nothing is written and the append
fails with AppendOffsetConflict. Retrying an already-landed append
therefore conflicts instead of appending twice, and recovery is
re-deriving the offset from len().

BlobFile no longer tracks the object length locally; the store's own
offset check is the compare-and-swap.

* Review remarks

* Validate file length in S3 append response

* Fix linting, we don't mind a large enum variant on index builder

* universal_io: conformance-test stale-handle append conflict recovery

Promote the two-handle conflict scenario from the in-memory BlobFile
test into the backend-generic conformance battery: a second writeable
handle grows the file, the stale handle's append conflicts cleanly (the
offset check runs against the file, not the handle's view), and the
contract's documented recovery — reopen, re-check the length, append at
the real end — lands the data exactly once. Now exercised over mmap,
io_uring, and the object-store stack instead of only the in-memory
emulation.

* io_bridge_object_store: stub-server tests for append response handling

The native append's HTTP state machine was only exercised by the gated
live-store integration test (S3_APPEND_INTEGRATION_TEST=1), so none of
its branches ran in CI. Cover them hermetically against a minimal local
HTTP stub — one connection per canned response, no new dependencies:

- the signed write-offset PUT, and the new-size validation on success
  (matching, mismatching, unparseable, and absent size headers — the
  absent case at offset zero and past it);
- conflict mapping for 400 InvalidWriteOffset, 412, and 404 under a
  nonzero offset, with 404 at offset zero staying NotFound, and a 400
  without the conflict code staying a plain error;
- 429/5xx retries re-sending the same offset, giving up after
  MAX_ATTEMPTS, and the lost-acknowledgement reconciliation via HEAD
  (accepted when the object ends at offset + len, rejected otherwise);
- the status + body excerpt on unexpected failures.

* simple_disk_cache: statically assert the cache stays read-only

Disallowing appends through the disk cache made them a compile-time
error by removing the impls; pin that with assert_not_impl_any so the
UniversalAppend/UniversalFlush/UniversalWrite impls cannot quietly
return. Runtime rejection of writeable opens stays covered per backend
variant.
2026-07-15 13:55:08 +02:00
Arnaud Gourlay 0d2f5c7e85 Miscellaneous cleanups (#9849) 2026-07-15 13:44:51 +02:00
cb256a801d [DiskCache] Dedup overlapping remote requests (#9838)
* [AI] piggyback on in-flight requests

* cleanup tests

* Insert in-flight fetch through Slab's VacantEntry (#9840)

Replace the peek-key-then-insert pattern with slab's vacant_entry() API:
inserting through the reserved entry guarantees the fetch lands on the
key the remote read was tagged with, instead of relying on nothing
touching the slab between the peek and the insert. A failed remote
schedule still leaves no trace, as VacantEntry allocates nothing until
insert.

get_or_init_remote_pipeline now takes the field instead of &mut self so
the VacantEntry can hold a disjoint borrow of in_flight across the
schedule call.

Co-authored-by: Claude Fable 5 <noreply@anthropic.com>

---------

Co-authored-by: Andrey Vasnetsov <andrey@vasnetsov.com>
Co-authored-by: Claude Fable 5 <noreply@anthropic.com>
2026-07-14 15:42:50 -04:00