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Elasticsearch version 8.11.2

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Elasticsearch version 8.11.2

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Also see Breaking changes in 8.11.

Known issues

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High Memory Pressure due to a GC change in JDK 21

This version of Elasticsearch is bundled with JDK 21. In JDK 21 Preventive GC has been removed. This may lead to increased memory pressure and an increased number of CircuitBreakerExceptions when retrieving large documents under some particular load. (issue: #99592)

If you needed to explicitly enable Preventive GC for your workload in a previous Elasticsearch version, we recommend you avoid to upgrade to this version, as the settings to enable Preventive GC have been removed from JDK 21.

Security updates

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The 8.11.2 patch release contains a fix for a potential security vulnerability. Please see our security advisory for more details.

Bug fixes

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Allocation

Improve failure handling in ContinuousComputation #102281

Application

Default run_ml_inference should be true #102151
[Query Rules] Fix bug where combining the same metadata with text/numeric values leads to error #102891 (issue: #102827)

Cluster Coordination

Synchronize Coordinator#onClusterStateApplied #100986 (issue: #99023)

Data streams

[Usage API] Count all the data streams that have lifecycle #102259

ES|QL

ES|QL: Fix drop of renamed grouping #102282 (issue: #102121)
ES|QL: Fix layout management for Project #102399 (issue: #102120)
Fix DISSECT with empty patterns #102580 (issue: #102577)
Fix leaking blocks in TopN #102715 (issue: #102646)
Fix leaking blocks in BlockUtils #102716
Fix memory tracking in TopN.Row #102831 (issues: #100640, #102784, #102790, #102683)

ILM+SLM

[ILM] Fix downsample to skip already downsampled indices #102250 (issue: #102249)

Infra/Circuit Breakers

Add more logging to the real memory circuit breaker and lower minimum interval #102396

Ingest Node

Better processor stat merge #102821

Machine Learning

Ensure datafeed previews with no start or end time don’t search the cold or frozen tiers #102492
Recreate the Elasticsearch private temporary directory if it doesn’t exist when an ML job is opened #102599

Mapping

Fix dense_vector cluster stats indexed_vector_dim_min/max values #102467 (issue: #102416)

Search

Allow mismatched sort-by field types if there are no docs to sort #102779

Security

Fix double-completion in SecurityUsageTransportAction #102114 (issue: #102111)

Snapshot/Restore

Set region for the STS client via privileged calls in AWS SDK #102230 (issue: #102173)
Simplify BlobStoreRepository idle check #102057 (issue: #101948)

Transform

Ensure transform updates only modify the expected transform task #102934 (issue: #102933)
Exclude stack traces from transform audit messages and health #102240

Enhancements

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Machine Learning

Add inference counts by model to the machine learning usage stats #101915

Security

Upgrade xmlsec to 2.3.4 #102220

Upgrades

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Snapshot/Restore

Upgrade reactor netty http version #102311

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