Elasticsearch: v9.5.0 Release

699 Commits in this Release

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

Migrate to log4j2 annotation processor for plugins (#136983) (#148685)

Authored May 11, 2026

[Backport] Fix IndexRecoveryIT.testSourceThrottling (#154121)

Authored July 16, 2026

[9.4] [ES|QL] Make subquery with mixed data type across branches behave more consistently with nullify (#150704) (#150950)

Authored June 6, 2026

GPU codec: fall back to CPU graph build on flush when GPU is busy (#149373) (#149475)

Authored May 20, 2026

[9.4] Roll reindexed ML state indices in daily maintenance (#149555) (#153063)

Authored July 7, 2026

[ES|QL] Revert GROK watchdog wire serialization (9.4) (#152634)

Authored July 1, 2026

ESQL: Fix two CASE bugs (#149883)

Authored May 26, 2026

[9.4] [ESQL] Backport: Reduce Hadoop runtime dependencies in datasource plugins (#147588)

Authored April 27, 2026

Use search threadpool for coordination in ES|QL (#149034) (#149186)

Authored May 15, 2026

Aggs: Account aggs uncompressed size on coordinator reduction (#148885) (#149728)

Authored May 22, 2026

[9.4] Remove flaky tests of unreleased functionality (#152683)

Authored July 1, 2026

[9.4] [Inference API] Fix associating an inference endpoint to an ML node deployment (#153688) (#154873)

Authored July 23, 2026

Backport of: [ES|QL] query approximation: add min source row count (#147886) (#148391)

Authored May 6, 2026

[9.4] ESQL: Purge INSIST from the codebase (#153845) (#154081)

Authored July 16, 2026

Fix InvalidMappedField equals/hashCode and split out InvalidMappedTsField (#146117) (#149518)

Authored May 20, 2026

[9.4][ML] Add external changelog source support for release notes (#145958) (#148363)

Authored May 6, 2026

Prune changelogs after 9.4.2 release

Authored May 29, 2026

[9.4] Migrate :distribution:docker yaml tests to Testcontainers (#148452) (#148627)

Authored May 8, 2026

Aggs: Fix auto_date_histogram and date_histogram inside a global agg (#147427) (#148831)

Authored May 12, 2026

[Inference API] Add inference id to the timeout string and use internal timeout exception (#146531) (#148142)

Authored May 1, 2026

[9.4] [Inference API] Deploy text embedding models before validation call (#153886) (#154986)

Authored July 24, 2026

Upgrade to log4j 2.26.0 (#132166) (#148939)

Authored May 13, 2026

Truncate error for ILM's step_info instead of string (#150413) (#151535)

Authored June 17, 2026

Back-port #146431: Fix pooled SearchHits leak in MergeResult#writeTo on transport version mismatch (#146431) (#146500)

Authored April 16, 2026

Fix: propagate ReloadableCustomAnalyzer reloads through AnalyzerWrapper subclasses (#147695) (#149077)

Authored May 14, 2026

[9.4] Add ArchUnit architecture checks for build logic (#151906) (#151993)

Authored June 25, 2026

Tighten up `Expect: 100-continue` handling (#154546) (#154611)

Authored July 21, 2026

[9.4] Normalize `_timeseries` to JSON for stored source (#148716) (#149281)

Authored May 19, 2026

Fix GPU SQ format name to match CPU equivalent (#149512) (#151575)

Authored June 17, 2026

Consistent behavior for MMR when docs are missing diversification field (#146005) (#146921)

Authored April 21, 2026

Revert "Merge branch '9.4' of github.com:elastic/elasticsearch into 9.4"

Authored May 8, 2026

[9.4] [ML] Scope scroll clear retries in ML datafeeds to CCS and bound orphan queue (#149146) (#150365)

Authored June 1, 2026

[9.4] Fix view+alias data deduplication in ViewResolver (#154694) (#154945)

Authored July 24, 2026

[Inference] Shutdown apache on cancel (#149987) (#150680)

Authored June 3, 2026

[9.4] [ML] Retry audit on failures (#146399) | [Transform] Retry audit index creation (#147754) (#153160)

Authored July 7, 2026

[9.4] Add query filter to more query types (#150127) (#150247)

Authored May 29, 2026

Fix ReindexerTests.testRemoteReindexSkipsOpenPitWhenPointInTimeAlreadySet (#146915)

Authored April 22, 2026

ESQL: Fix starts_with/ends_with/like with special chars (#146348) (#146421)

Authored April 15, 2026

Prune changelogs after 9.4.3 release

Authored July 1, 2026

[9.4] ESQL: Fix "optimized incorrectly" error from project reorder (#149053) (#149377)

Authored May 19, 2026