Elasticsearch: v8.19.21 Release

60 Commits in this Release

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

Migrate :modules:reindex to JUnit rule test clusters (#155637) (#156089)

Authored August 6, 2026

Add top-level catch to ensure batched queries always respond (#155908) (#157196)

Authored August 19, 2026

[8.19] Keep scroll contexts on transient search queue rejection (#155697) (#156524)

Authored August 12, 2026

Ensure `Error` propagates out of `S3BlobContainer` (#156787)

Authored August 14, 2026

Exclude non-metadata _type from default search hit fields (#155706) (#156253)

Authored August 9, 2026

Fix windows service tests (#137451) (#156336)

Authored August 10, 2026

Use constant for empty `ActionFilters` (#157026)

Authored August 18, 2026

Unmute tests linked to closed issues (#155878)

Authored August 6, 2026

[8.19] Migrate ccs-rolling-upgrade to JUnit clusters (#156092) (#156169)

Authored August 18, 2026

Remove mapping counting tests from 11_indices_metrics.yml (#138953) (#157078)

Authored August 18, 2026

[8.19] ESQL: Solves CIDRMatch optimizer bug and unresolved ref after implicit casting bug in analyzer (#156162) (#157301)

Authored August 22, 2026

Migrate mixed-tier-cluster to JUnit rule clusters (#156096) (#157053)

Authored August 18, 2026

Handle createLink post security manager in StoreRecoveryTests (#129964) (#156219)

Authored August 8, 2026

[8.19] Fix Google VertexAI chat completion tool call args for non-string values (#156665) (#156701)

Authored August 13, 2026

[8.19] Fix testMixedSortFieldTypes (#147342) (#156048)

Authored August 18, 2026

Fix/indices query cache null shard stats (#157050) (#157220)

Authored August 20, 2026

Fix RemoteClusterSecurityRestIT by waiting for tasks to finish (#156598)

Authored August 12, 2026

Backport of #122593 to `8.19`. (#156875)

Authored August 16, 2026

[8.19] Migrate ml basic-multi-node to JUnit rule cluster (#157293) (#157373)

Authored August 21, 2026

Fix recurring cluster-formation timeout flakiness in InternalTestCluster (#152751) (#156140)

Authored August 7, 2026

unmute #112731 (#156692)

Authored August 13, 2026

Harden old-ES fixture download and rebake image (#157377)

Authored August 21, 2026

[8.19] Add link to docs from `LagDetector` warning (#157001) (#157027)

Authored August 18, 2026

Migrate :x-pack:plugin:ml:qa:disabled to JUnit rule-based test cluster (#157079) (#157138)

Authored August 19, 2026

Migrate shutdown multi-node QA to JUnit rule cluster (#157296) (#157391)

Authored August 21, 2026

Migrate text-structure-with-security to JUnit rule (#157356) (#157395)

Authored August 21, 2026

Migrate license-enforcing qa to JUnit cluster rule (#157415) (#157491)

Authored August 24, 2026

Migrate ml-with-security to JUnit rule-based yaml rest test (#157080) (#157228)

Authored August 20, 2026

Update wolfi (versioned) (#151543)

Authored August 12, 2026

Update wolfi (versioned) (#157633)

Authored August 25, 2026

Update wolfi (versioned) (#157047)

Authored August 18, 2026

Update wolfi (versioned) (#157082)

Authored August 18, 2026

[8.19] Avoid unsafe cluster state read in BatchedRerouteService - unmute test (#156156) (#156168)

Authored August 9, 2026

[build-tools] Make build tool tests more stable (#155079) (#155115)

Authored August 6, 2026

[8.19] Fix realtime refresh YAML Tests (#157614) (#157780)

Authored August 26, 2026

Update hard-cap to match the main (#156023)

Authored August 6, 2026

[CI] Skip node setup on old glibc platforms (#155820) (#156059)

Authored August 6, 2026

Increase ensureGreen timeout in oldrepos tests (#156083) (#156099)

Authored August 7, 2026

Fix and unmute VectorSystemPropertyTests (#156065)

Authored August 7, 2026

[8.19] Add a limit on aggregation nesting depth (#155743) (#156265)

Authored August 10, 2026