Elasticsearch: v9.5.5 Release

155 Commits in this Release

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

ESQL: read partition_detection and partition_path on the query path (#157208) (#159140)

Authored September 12, 2026

[9.5] Fix METADATA behavior with subqueries and views (#157233) (#160134)

Authored September 23, 2026

[9.5] Fix query phase losing a listener in remote reduction rejection (#160152) (#160489)

Authored September 28, 2026

Allow multipage PDFs on the semantic field (#159641) (#160600)

Authored September 29, 2026

[9.5] ESQL: Warn on GROK typed conversion failure (#160564) (#160574) (#160636)

Authored September 30, 2026

[9.5] Hold store ref during recovery (#156981) (#160446)

Authored September 29, 2026

fix(build): make Snyk graph task config-cache safe (#160151) (#160292)

Authored September 25, 2026

Prune changelogs after 9.5.4 release

Authored September 15, 2026

[9.5] Tolerate missing remote indices during the inference rewrite (#160207) (#160526)

Authored September 29, 2026

[9.5] [Inference API] Support OpenAI chat completion reasoning effort (#156505) (#159382)

Authored September 15, 2026

JDK 27 EA compatibility fixes (#157055) (#159506)

Authored September 16, 2026

[9.5] Strengthen build-tools-internal plugin test coverage (#158873) (#158919)

Authored September 11, 2026

[9.5] Resolve high-cardinality keyword queries to ScanningBinaryDocValuesAutomatonQuery (#158633)

Authored September 10, 2026

Handle refresh exceptions in ensureShardSearchActive (#159526) (#159594)

Authored September 17, 2026

Fix sorted search failures on empty shard results (#160132) (#160622)

Authored September 30, 2026

[9.5] [Test] Fix `StatelessReshardIT::testSearchAtDone` (#159326) (#159367)

Authored September 15, 2026

Fix H3 great-circle latitude correction edge selection (#160228) (#160336)

Authored September 25, 2026

[9.5] [ESQL] Clear reminted parquet/orc filters (#158155) (#159119)

Authored September 11, 2026

refactor(SearchWithRejectionsIT): add listener and latch in testOpenContextsAfterRejections (#159965) (#160088)

Authored September 23, 2026

Reject Prometheus remote write 2.0 requests (#159987) (#160066)

Authored September 23, 2026

[9.5] Fix testConcurrentSnapshotDeleteAndDeleteIndex (#158765) (#159311)

Authored September 15, 2026

Netty upgrade 4.1.137.Final (#157348) (#159557)

Authored September 17, 2026

Netty upgrade 4.1.138.Final (#159561) (#159833)

Authored September 21, 2026

Make sure buffer files are cleared at startup (#159701) (#159879)

Authored September 21, 2026

Fix testPopulateCacheWithSharedSourceInputStreamFactory (#155640) (#159832)

Authored September 21, 2026

[9.5] Fix testTranslogIsolatedNodeOnlyStressRecoveryTest (#160104)

Authored September 23, 2026

test(SearchWithRejectionsIT): unmute

Authored September 23, 2026

Unmute #155704

Authored September 25, 2026

Update wolfi (versioned) (#158742)

Authored September 14, 2026

chore(deps): update wolfi (versioned) (#160568)

Authored September 29, 2026

Mute org.elasticsearch.xpack.security.transport.CrossClusterSigningConfigReloaderIntegTests testRemoveFileWithConfig #159810

Authored September 20, 2026

Mute org.elasticsearch.xpack.ml.integration.MlJobIT testCreateJobInSharedIndexUpdatesMapping #159275

Authored September 15, 2026

Mute org.elasticsearch.index.store.FieldInfoCachingDirectoryTests testWeakReferenceReclaimsCanonical #159154

Authored September 21, 2026

Mute org.elasticsearch.index.mapper.DateRangeDocValuesLoaderTests testEmptyRangesAppendsNull #159159

Authored September 14, 2026

Mute org.elasticsearch.index.store.BytesReadHeaderIT testBiggerIndexReadsMoreBytes #159167

Authored September 14, 2026

Mute org.elasticsearch.xpack.security.transport.CrossClusterApiKeySignatureManagerTests testSignAndVerifyPKCS12orBCFKS #159807

Authored September 21, 2026

Mute org.elasticsearch.xpack.logsdb.qa.LogsDbVersusReindexedLogsDbChallengeRestIT testRandomQueries #160063

Authored September 23, 2026

Mute org.elasticsearch.xpack.security.transport.CrossClusterApiKeySignatureManagerTests testSignAndVerifyDifferentPayloadFailsPKCS12orBCFKS #159806

Authored September 21, 2026

Mute org.elasticsearch.xpack.restart.MLModelDeploymentFullClusterRestartIT testDeploymentSurvivesRestart {cluster=UPGRADED} #151923

Authored September 22, 2026

Mute org.elasticsearch.search.SearchWithRejectionsIT testOpenContextsAfterRejections #156244

Authored September 10, 2026