elasticsearch/docs/reference/release-notes/8.16.6.asciidoc

[[release-notes-8.16.6]]
== {es} version 8.16.6


Also see <<breaking-changes-8.16,Breaking changes in 8.16>>.

[[bug-8.16.6]]
[float]
=== Bug fixes

Infra/Core::
* Prevent rare starvation bug when using scaling `EsThreadPoolExecutor` with empty core pool size. {es-pull}124732[#124732] (issue: {es-issue}124667[#124667])

Machine Learning::
* Migrate `model_version` to `model_id` when parsing persistent elser inference endpoints {es-pull}124769[#124769] (issue: {es-issue}124675[#124675])

Search::
* Do not let `ShardBulkInferenceActionFilter` unwrap / rewrap ESExceptions {es-pull}123890[#123890]
* Revert fail-fast disconnect strategy for `_resolve/cluster` {es-pull}124241[#124241]

[[upgrade-8.16.6]]
[float]
=== Upgrades

Security::
* Bump nimbus-jose-jwt to 10.0.2 {es-pull}124544[#124544]


[discrete]
[[known-issues-8.16.6]]
=== Known issues

{esql}::

* Some valid queries using an `ENRICH` command can fail when a match field is used that is absent from some indices or shards, either with a 500 status code due to `NullPointerException` or `ClassCastException` or with a 400 status code and `IllegalArgumentException`. This is fixed in {es-pull}126187[#126187].