[[release-notes-8.17.6]]
== {es} version 8.17.6

Also see <<breaking-changes-8.17,Breaking changes in 8.17>>.

[[bug-8.17.6]]
[float]
=== Bug fixes

CCS::
* Cancel expired async search task when a remote returns its results {es-pull}126583[#126583]

Data streams::
* [otel-data] Bump plugin version to release _metric_names_hash changes {es-pull}126850[#126850]

ES|QL::
* Fix count optimization with pushable union types {es-pull}127225[#127225] (issue: {es-issue}127200[#127200])

Infra/Core::
* Rework uniquify to not use iterators {es-pull}126889[#126889] (issue: {es-issue}126883[#126883])
* Workaround max name limit imposed by Jackson 2.17 {es-pull}126806[#126806]

Machine Learning::
* Adding missing `onFailure` call for Inference API start model request {es-pull}126930[#126930]
* Fix text structure NPE when fields in list have null value {es-pull}125922[#125922]
* Leverage threadpool schedule for inference api to avoid long running thread {es-pull}126858[#126858] (issue: {es-issue}126853[#126853])

Ranking::
* Fix LTR rescorer with model alias {es-pull}126273[#126273]

Task Management::
* Fix race condition in `RestCancellableNodeClient` {es-pull}126686[#126686] (issue: {es-issue}88201[#88201])

Vector Search::
* Fix `vec_caps` to test for OS support too (on x64) {es-pull}126911[#126911] (issue: {es-issue}126809[#126809])

[[enhancement-8.17.6]]
[float]
=== Enhancements

Security::
* Add Issuer to failed SAML Signature validation logs when available {es-pull}126310[#126310] (issue: {es-issue}111022[#111022])