Elasticsearch: v9.1.9 Release

28 Commits in this Release

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

[9.1] GET /_migration/deprecations doesn't check disk watermarks against correct settings values (#138115) (#138837)

Authored December 1, 2025

Backport 9.1.8 Elasticsearch release notes (#139212)

Authored December 8, 2025

[9.1] Address CompoundRetrieverBuilder Failure Handling (#136732) (#139484)

Authored December 13, 2025

Handle individual doc parsing failure gracefully in bulk request with pipeline (#138624) (#138706)

Authored November 27, 2025

Reapply "Remove references to V8_1_0 transport version (#136239)" (#139014)

Authored December 4, 2025

[9.1] Improve security migration resilience by handling version conflicts (#137558) (#138476)

Authored November 27, 2025

Reapply "Remove V_8_0_0 transport version from tests (#135942)" (#136578) (#138990) (#139007)

Authored December 3, 2025

[9.1] fix: Correctly pickup MRT value for `msearch`'s search requests (#138583) (#139585)

Authored December 16, 2025

Update wolfi (versioned) (#138907)

Authored December 8, 2025

Mute org.elasticsearch.search.basic.SearchWithRandomDisconnectsIT testSearchWithRandomDisconnects #138128

Authored November 28, 2025

Mute org.elasticsearch.upgrades.SecurityIndexRolesMetadataMigrationIT testRoleMigration #138731

Authored November 27, 2025

[9.1] Fix testRoleMigration race condition (#138742) (#138746)

Authored November 28, 2025

rest-api-spec: fix required annotations (#138147) (#139348)

Authored December 11, 2025

ESQL: Add METADATA _index to testMergeKeywordAndObject test (#138781)

Authored November 28, 2025

Fix index version constant (#139496)

Authored December 15, 2025

Update wolfi (versioned) (#139613)

Authored December 16, 2025

[ML] Fix for flaky sparse_vector_search test (#138740) (#139020)

Authored December 4, 2025

Re-Enable New Semantic Text Format in ShardBulkInferenceActionFilter Tests (#138628) (#138673)

Authored December 5, 2025

Make Table final (#138915) (#138936)

Authored December 3, 2025

Reapply "Remove some uses of 8.0.0 transport version constant (#135715)" (#138986) (#138988)

Authored December 3, 2025

Bump lz4 dependency (#138806) (#138862)

Authored December 2, 2025

[ES|QL] Compare query builders using identity (#139080) (#139136)

Authored December 5, 2025

allocation: fix up a random string sequence collision (#139225) (#139329)

Authored December 10, 2025

Change checkFileRead to throw IOException (#139320) (#139331)

Authored December 10, 2025

Add reindex YAML tests to rest-resources-zip (#138271) (#139349)

Authored December 11, 2025

Fix parameter type in ml.get_categories YAML test (#138220) (#139354)

Authored December 11, 2025

Finish role updates in security migration tests before shutdown (#139121) (#139178)

Authored December 12, 2025

[9.1] Avoid stack overflow in IndicesClusterStateService applyClusterState (#139498)

Authored December 14, 2025