Don't Upload Redundant Shard Files (#51729) #52147
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Segment(s) info blobs are already stored with their full content in the "hash" field in the shard snapshot metadata as long as they are smaller than 1MB. We can make use of this fact and never upload them physically to the repo. This saves a non-trivial number of uploads and downloads when restoring and might also lower the latency of searchable snapshots since they can save phyiscally loading this information as well.
original-brownbear
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:Distributed Coordination/Snapshot/Restore
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Pinging @elastic/es-distributed (:Distributed/Snapshot/Restore) |
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Segment(s) info blobs are already stored with their full content
in the "hash" field in the shard snapshot metadata as long as they are
smaller than 1MB. We can make use of this fact and never upload them
physically to the repo.
This saves a non-trivial number of uploads and downloads when restoring
and might also lower the latency of searchable snapshots since they can save
physically loading this information as well.
backport of #51729