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44fa95f6d5
* Add first stubs for WAL delta shard transfer method * Repurpose queue proxy, use it for transferring WAL diff as well * Integrate WAL delta transfer is transfer selection logic * Add WalDelta shard transfer type which is not exposed in public API * Basic implementation of falling back to stream records transfer * Share await_consensus_sync function * Ask remote shard for recovery point * During WAL delta transfer, resolve shard diff locally for recovery point * Rebase on latest dev, support empty WAL diff * Rebase on latest dev, support empty WAL diff * Use partial snapshot state for WAL delta transfer * Set cutoff point on remote shard after shard WAL delta transfer * Set cutoff point on remote shard after stream records transfer * During WAL delta transfer, set s tate from partial snapshot to partial * Describe WAL delta transfer in a comment * Allow updating cutoff point in stream records transfer to fail * Do not set cutoff point on remote shard on WAL delta transfer * Make await consensus sync logic easier to read and reason about * Fix fallback to other shard transfer method on WAL delta transfer fail * Various minor improvements * Add TODO for just ignoring API unimplemented errors * Only allow stream records cutoff point error if remote is older version * Allow switching to partial to fail when falling back * Only change shard state to partial if not in partial state already * Change default shard transfer method back to stream records * Add important TODO back * Add WAL delta shard transfer method in gRPC * Prefer configured shard transfer method as default * Extract shard transfer fallback logic into separate function
