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[9.2] Allow allocating clones over low watermark (#137399) #137427

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elasticsearchmachine merged 1 commit into from
Oct 31, 2025
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[9.2] Allow allocating clones over low watermark (#137399) #137427

elasticsearchmachine merged 1 commit into from
Oct 31, 2025

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@DaveCTurner DaveCTurner commented Oct 31, 2025

Backports the following commits to 9.2:

@DaveCTurner
Allow allocating clones over low watermark (elastic#137399)
eca1b0b 
A new shard which is the result of a clone operation starts out on the
same node as the shard being cloned and takes no additional space due to
hard-linking, so we can safely allocate it even if the node is over the
low watermark, and skip the checks that consider the additional space
taken by the shard.

Closes ES-13384
@DaveCTurner DaveCTurner added :Distributed Coordination/Allocation All issues relating to the decision making around placing a shard (both master logic & on the nodes) >bug auto-merge-without-approval Automatically merge pull request when CI checks pass (NB doesn't wait for reviews!) backport Team:Distributed Coordination Meta label for Distributed Coordination team labels Oct 31, 2025
@elasticsearchmachine elasticsearchmachine mentioned this pull request Oct 31, 2025
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@elasticsearchmachine elasticsearchmachine merged commit 69e2512 into elastic:9.2 Oct 31, 2025
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@DaveCTurner DaveCTurner deleted the backport/9.2/pr-137399 branch October 31, 2025 09:42
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auto-merge-without-approval Automatically merge pull request when CI checks pass (NB doesn't wait for reviews!) backport >bug :Distributed Coordination/Allocation All issues relating to the decision making around placing a shard (both master logic & on the nodes) Team:Distributed Coordination Meta label for Distributed Coordination team v9.2.1

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@DaveCTurner @elasticsearchmachine