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Suppress merge-on-recovery for older indices - #113462
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elasticsearchmachine merged 2 commits intoSep 24, 2024
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elasticsearchmachine merged 2 commits into
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There may be many older indices in need of merging, but today we do not throttle this work across shards so an upgrade could lead to an overwhelming spike in merges. With this commit we make it so that the automatic merge-on-recovery behaviour only applies to newly-created indices.
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Pinging @elastic/es-distributed (Team:Distributed) |
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Hi @DaveCTurner, I've created a changelog YAML for you. |
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Sep 24, 2024
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I'll backport the IndexVersions change, but nothing else, to 8.16.
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| static { | ||
| final var propertyValue = System.getProperty("es.trigger_merge_after_recovery"); | ||
| final var propertyValue = System.getProperty("es.trigger_merge_after_recovery_8_515_00_0"); |
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Renaming the kill-switch here to nullify the overrides that are in place today and automatically re-enable this feature when upgrading. We can rename it back again later.
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Most of elastic#113462 only applies to `main`, but for now we must keep the index versions aligned in `8.x`. This commit backports the new `IndexVersion` constant.
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Most of #113462 only applies to `main`, but for now we must keep the index versions aligned in `8.x`. This commit backports the new `IndexVersion` constant.
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In elastic#113462 we introduced a version bound on post-recovery merges to avoid a spike of merge activity after an upgrade. At the time there was no `IndexVersion` unique to the 9.x series, but we have such a version now, so this commit properly restricts post-recovery merges to only apply to indices created by versions that support them. Relates ES-9620
elasticsearchmachine
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Feb 18, 2025
In #113462 we introduced a version bound on post-recovery merges to avoid a spike of merge activity after an upgrade. At the time there was no `IndexVersion` unique to the 9.x series, but we have such a version now, so this commit properly restricts post-recovery merges to only apply to indices created by versions that support them. Relates ES-9620
DaveCTurner
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Feb 18, 2025
In elastic#113462 we introduced a version bound on post-recovery merges to avoid a spike of merge activity after an upgrade. At the time there was no `IndexVersion` unique to the 9.x series, but we have such a version now, so this commit properly restricts post-recovery merges to only apply to indices created by versions that support them. Relates ES-9620
elasticsearchmachine
pushed a commit
that referenced
this pull request
Feb 18, 2025
In #113462 we introduced a version bound on post-recovery merges to avoid a spike of merge activity after an upgrade. At the time there was no `IndexVersion` unique to the 9.x series, but we have such a version now, so this commit properly restricts post-recovery merges to only apply to indices created by versions that support them. Relates ES-9620
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There may be many older indices in need of merging, but today we do not
throttle this work across shards so an upgrade could lead to an
overwhelming spike in merges. With this commit we make it so that the
automatic merge-on-recovery behaviour only applies to newly-created
indices.