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Batch ILM policy cluster state updates #122917

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Enhancement
#126529
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Batch ILM policy cluster state updates#122917
Enhancement
#126529
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lukewhiting
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:Data Management/ILM+SLMDO NOT USE. Use ":StorageEngine/ILM" or ":Distributed Coordination/SLM" instead.>enhancementTeam:Data Management (obsolete)DO NOT USE. This team no longer exists.
@nielsbauman

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@nielsbauman
nielsbauman
opened on Feb 19, 2025

Today, ILM policy cluster state updates are not batched:

elasticsearch/x-pack/plugin/ilm/src/main/java/org/elasticsearch/xpack/ilm/action/TransportPutLifecycleAction.java

Lines 122 to 125 in 5160113

submitUnbatchedTask(
"put-lifecycle-" + request.getPolicy().getName(),
new UpdateLifecyclePolicyTask(request, listener, licenseState, filteredHeaders, xContentRegistry, client)
);

Batching these cluster state updates will reduce the number of cluster state updates the cluster needs to process. This is especially relevant in tests as the IndexTemplateRegistry adds dozens of ILM policies, each resulting in a dedicated cluster state update. This noticeably slows down cluster startup times.

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:Data Management/ILM+SLMDO NOT USE. Use ":StorageEngine/ILM" or ":Distributed Coordination/SLM" instead.>enhancementTeam:Data Management (obsolete)DO NOT USE. This team no longer exists.

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