Elasticsearch: v9.5.3 Release

83 Commits in this Release

Ordered by the degree to which they evolved the repo in this version.

[9.5] Cache computed write load proportions in RoutingAllocation (#156635) (#157719)

Authored August 26, 2026

[9.5] [Inference API] Fix inference/_update to allow rotating secrets (#157214) (#157413)

Authored August 21, 2026

[9.5] Account for document source memory during streaming fetch (#157522) (#157728)

Authored August 26, 2026

Backport reindex relocation fixes to 9.5 (#157566)

Authored August 25, 2026

Fix ML multi-cluster tests after rule migration (#157526) (#157583)

Authored August 26, 2026

[9.5] Fix composite agg on doc values skipper fields (#158144)

Authored August 31, 2026

Component template chunked response (#158175) (#158256)

Authored September 1, 2026

[9.5] Accept .tasks mappings version 0 (#157085)

Authored August 26, 2026

Abort the msearch instead of force-adding failure items on a breaker trip (#156934) (#158255)

Authored September 1, 2026

[9.5] Reject stale reshard start split request missing IndexReshardingMetadata (#157816) (#158066)

Authored August 28, 2026

Backport bulk cancellation system context (#157924)

Authored August 27, 2026

Migrate ml-with-security to JUnit rule-based yaml rest test (#157080) (#157226)

Authored August 20, 2026

ESQL: Solves CIDRMatch optimizer bug and unresolved ref after implicit casting bug in analyzer (#156162) (#157298)

Authored August 21, 2026

Fix flaky testRelocateHollowShards hollow-shard race (#153388) (#157505)

Authored August 24, 2026

Upgrade httpclient5 to 5.6.4 (#157564) (#157704)

Authored August 26, 2026

ESQL:DS: Harden Utf8AscTopNEncoder lead-byte table against (#157402) (#157498)

Authored August 24, 2026

Unmute OtelMetricsIT#testExplicitMetrics

Authored August 21, 2026

Unmute OTelMetricsBufferingIT#testExplicitMetrics

Authored August 21, 2026

[9.5] Add more logging and re-enable flappy test (#157344) (#157347)

Authored August 21, 2026

Migrate native-multi-node-tests to JUnit rule cluster (#157113) (#157126)

Authored August 20, 2026

Migrate text-structure-with-security to JUnit rule (#157356) (#157393)

Authored August 21, 2026

Migrate ml basic-multi-node to JUnit rule cluster (#157293) (#157371)

Authored August 21, 2026

Migrate searchable-snapshots qa:rest to JUnit rule (#157414) (#157579)

Authored August 25, 2026

Update wolfi (versioned) (#158275)

Authored September 1, 2026

Soving concurrency and timeout in OTel tests (#153961) (#157421)

Authored August 21, 2026

chore(deps): update gradle wrapper 9.7.1 (#155433) (#157261)

Authored August 20, 2026

[CI] Add retry logic for Docker tmpfs remounting flake (#154096) (#154283)

Authored August 19, 2026

[9.5] Fix ArrayOrder block loaders falsely claiming SORTED_ASCENDING (#157916)

Authored August 28, 2026

Update wolfi (versioned) (#157034)

Authored August 18, 2026

Update wolfi (versioned) (#157626)

Authored August 25, 2026

Update wolfi (versioned) (#157062)

Authored August 18, 2026

Null-safe async instrument (#157161) (#157185)

Authored August 19, 2026

Fix testGetVirtualBatchedCompoundCommitChunkFailure (#156794) (#157202)

Authored August 19, 2026

Add link to docs from `LagDetector` warning (#157001) (#157030)

Authored August 18, 2026

Fix shared score accumulator amongst segments for ivf search (#157229) (#157241)

Authored August 20, 2026

Fix smart-retry gap in lucene-index-compatibility (#157165) (#157243)

Authored August 20, 2026

ES|QL|DS: Fix throttled reads giving up early on duration budget (#157132) (#157253)

Authored August 20, 2026

Fix/indices query cache null shard stats (#157050) (#157222)

Authored August 20, 2026

Rolling upgrade from 9.4.x to main fails: `Template` deserialization stream misalignment in BWC tests [#156594] (#156602) (#156991)

Authored August 18, 2026

Fix SLM races that mis-record concurrent snapshot outcomes (#155934) (#157193)

Authored August 20, 2026