[[release-notes-8.19.4]]
== {es} version 8.19.4

coming[8.19.4]

Also see <<breaking-changes-8.19,Breaking changes in 8.19>>.

[[bug-8.19.4]]
[float]
=== Bug fixes

Authorization::
* Remove `DocumentSubsetBitsetCache` locking {es-pull}133681[#133681] (issue: {es-issue}132842[#132842])

ES|QL::
* Reserve memory for Lucene's TopN {es-pull}134235[#134235]
* Track memory in evaluators {es-pull}133392[#133392]

Infra/Core::
* Remove `java.xml` from system modules {es-pull}133671[#133671]

Infra/Scripting::
* Update `DefBootstrap` to handle Error from `ClassValue` {es-pull}133604[#133604]

Infra/Settings::
* Use latest setting value when initializing setting watch {es-pull}134091[#134091] (issue: {es-issue}133701[#133701])

Ingest Node::
* Fix `allow_duplicates` edge case bug in append processor {es-pull}134319[#134319]
* Fix enrich caches outdated value after policy run {es-pull}133680[#133680]

Machine Learning::
* Ensuring only a single request executor object is created {es-pull}133424[#133424]
* Fix double-counting of inference memory in the assignment rebalancer {es-pull}133919[#133919]
* Update EIS sparse and dense embedding max batch size to 16 {es-pull}132646[#132646]

Mapping::
* Allow trailing empty string field names in paths of flattened field {es-pull}133611[#133611] (issue: {es-issue}130139[#130139])
* Fixed a bug where text fields in LogsDB indices did not use their keyword multi fields for block loading {es-pull}134253[#134253]

Relevance::
* Disallow creating `semantic_text` fields in indices created prior to 8.11.0 {es-pull}133080[#133080]

Search::
* Prevent field caps from failing due to can match failure {es-pull}134134[#134134] (issue: {es-issue}116106[#116106])
* Use inner query for equals/hashCode() in `SourceConfirmedTextQuery` {es-pull}134451[#134451] (issue: {es-issue}134432[#134432])

Snapshot/Restore::
* Delay S3 repo warning if default region absent {es-pull}133848[#133848]

[[enhancement-8.19.4]]
[float]
=== Enhancements

Authorization::
* [Sentinel One] Add `manage`, `create_index`, `read`, `index`, `write`, `delete`, permission for third party agent indices `kibana_system` {es-pull}133793[#133793] (issue: {es-issue}133703[#133703])

Infra/Core::
* Return unique deprecation for old indices with incompatible date formats {es-pull}124597[#124597]

Infra/Plugins::
* Add Reason field to elastic-agent upgrade details metadata {es-pull}134711[#134711]

Network::
* Add human-readable HTTP client stats {es-pull}134296[#134296]

[[upgrade-8.19.4]]
[float]
=== Upgrades

FIPS::
* Bump bc-fips to 1.0.2.6 {es-pull}133198[#133198]

Network::
* Upgrade Netty to 4.1.126.Final {es-pull}134182[#134182]

Security::
* Bump bcpkix version {es-pull}132853[#132853]