Elasticsearch: v8.19.20 Release

87 Commits in this Release

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

[Inference API] Fix SSE parsing across network read boundaries (#154155) (#154499)

Authored July 20, 2026

[8.19] [Inference API] Deploy text embedding models before validation call (#153886) (#154995)

Authored July 24, 2026

[8.19] [Inference API] Fix associating an inference endpoint to an ML node deployment (#153688) (#154887)

Authored July 23, 2026

Tighten up `Expect: 100-continue` handling (#154692)

Authored July 22, 2026

[8.19] ESQL: Don't accidentally add flattened subfields (#155842)

Authored August 5, 2026

Re-escape wildcard operators produced by the normalizer in wildcard queries (#153582) (#154801)

Authored July 23, 2026

Reserve regexp automaton memory on the circuit breaker before building it (#155076) (#155252)

Authored July 28, 2026

Migrate repository-multi-version to JUnit rule based test clusters (#154843)

Authored July 23, 2026

Ensure cancelled _field_caps tasks are removed from the tasks API (#153831) (#154407)

Authored July 20, 2026

[8.19] Refactor RecoveryIT to use junit rule best approach (#151839) (#154585)

Authored July 21, 2026

ESQL: Fixes other possible causes of losing warnings (third attempt) (#154941) (#155093)

Authored July 27, 2026

[8.19] ESQL: Fix one of the causes of losing warnings (#154016) (#154137)

Authored July 17, 2026

[8.19] ESQL: Fix FROM_BASE64 generating wrong non-UTF strings (#155756)

Authored August 4, 2026

[8.19] Limit number_of_fragments in highlighting to prevent OOM crash (#155507) (#155952)

Authored August 5, 2026

Fix cloud-ess docker build with docker-container buildx driver (#155985) (#155996)

Authored August 5, 2026

Over estimate memory usage of delayable writable (#155015)

Authored July 26, 2026

Revert explicit CI disk size increase (#154060) (#154131)

Authored July 16, 2026

[8.19] Apply max_regex_length limit to intervals regexp and wildcard rules (#155231) (#155266)

Authored July 28, 2026

ESQL: Remove geo from MV_SORT allowed inputs and added error tests (#154417) (#155604)

Authored July 31, 2026

Forward Windows env vars and capture keystore stderr in test clusters (#154122) (#155220)

Authored July 29, 2026

Migrate repository-old-versions fixture to unit rule based test cluster and test container (#154518) (#155574)

Authored July 31, 2026

Remove `testChildrenTasksCancelledOnTimeout` (#155344)

Authored July 29, 2026

[8.19] Fix for index.auto_expand_replicas takes priority over ILM "Set Replicas" option [#150407] (#155279) (#155720)

Authored August 3, 2026

[8.19] Adding a hardcoded limit on nesting retrievers during parsing (#154814) (#155215)

Authored July 28, 2026

Revert "Migrate repository-multi-version to JUnit rule based test clusters"

Authored July 23, 2026

[8.19] Upgrade the version of jackson to 2.18.9 (#154569) (#154693)

Authored July 22, 2026

[8.19] Trip request breaker on phrase and term suggesters (#154837) (#155633)

Authored July 31, 2026

Unmute KeystoreManagementTests docker tests (#155192) (#155299)

Authored July 28, 2026

[8.19] Backport - Fix inference operator circuit breaker tests (#136870) (#154838)

Authored July 24, 2026

Fix `testLargeRequestIsNeverDispatched` (#154842)

Authored July 23, 2026

Fix zero-width tty in credential auto-config tests (#154248) (#154497)

Authored July 20, 2026

Upgrade the version of log4j to 2.26.1 (#154115) (#154549)

Authored July 21, 2026

[8.19] Adding check against self referencing filters in MultiplexerTokenFilterFactory and ScriptedConditionTokenFilterFactory (#154793) (#154922)

Authored July 26, 2026

Isolate old-repo test repo dirs per test class (#155550) (#155590)

Authored July 31, 2026

Fix smart retry pruning of parameterized tests (#155253) (#155843)

Authored August 4, 2026

Fix VerifyVersionConstantsIT: add V_7_9_1 with Lucene 8.6.2 (#154158)

Authored July 16, 2026

ESQL: Avoid MAX_INT loop on Repeat (#154295) (#154586)

Authored July 21, 2026

Fix copy-paste errors in esql/40_tsdb.yml & a bug that was hiding (#154691) (#154936)

Authored July 24, 2026

Unmute RejectionActionIT, bound its latch wait (#152668) (#154455)

Authored July 20, 2026

[CI] Create docker-container buildx builder for multi-platform DRA builds (#155826) (#155848)

Authored August 4, 2026