Prevent snapshots to be mounted as system indices (#61517) #61727
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System indices can be snapshotted and are therefore potential candidates to be mounted as searchable snapshot indices. As of today nothing prevents a snapshot to be mounted under an index name starting with . and this can lead to conflicting situations because searchable snapshot indices are read-only and Elasticsearch expects some system indices to be writable; because searchable snapshot indices will soon use an internal system index (elastic#60522) to speed up recoveries and we should prevent the system index to be itself a searchable snapshot index (leading to some deadlock situation for recovery). This commit introduces a changes to prevent snapshots to be mounted as a system index.
tlrx
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:Distributed Coordination/Snapshot/Restore
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Pinging @elastic/es-distributed (:Distributed/Snapshot/Restore) |
elasticmachine
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@elasticmachine update branch |
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Backport of #61517 for 7.x
System indices can be snapshotted and are therefore potential candidates
to be mounted as searchable snapshot indices. As of today nothing
prevents a snapshot to be mounted under an index name starting with .
and this can lead to conflicting situations because searchable snapshot
indices are read-only and Elasticsearch expects some system indices
to be writable; because searchable snapshot indices will soon use an
internal system index (#60522) to speed up recoveries and we should
prevent the system index to be itself a searchable snapshot index
(leading to some deadlock situation for recovery).
This commit introduces a changes to prevent snapshots to be mounted
as a system index.