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Add release notes for v8.18.8 release #135894

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2 changes: 2 additions & 0 deletions docs/reference/release-notes.asciidoc
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This section summarizes the changes in each release.

* <<release-notes-8.18.8>>
* <<release-notes-8.18.7>>
* <<release-notes-8.18.6>>
* <<release-notes-8.18.5>>
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--

include::release-notes/8.18.8.asciidoc[]
include::release-notes/8.18.7.asciidoc[]
include::release-notes/8.18.6.asciidoc[]
include::release-notes/8.18.5.asciidoc[]
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56 changes: 56 additions & 0 deletions docs/reference/release-notes/8.18.8.asciidoc
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[[release-notes-8.18.8]]
== {es} version 8.18.8

coming[8.18.8]

Also see <<breaking-changes-8.18,Breaking changes in 8.18>>.

[[bug-8.18.8]]
[float]
=== Bug fixes

Aggregations::
* Propagates filter() to aggregation functions' surrogates {es-pull}134461[#134461] (issue: {es-issue}134380[#134380])

ES|QL::
* Fix async get results with inconsistent headers {es-pull}135078[#135078] (issue: {es-issue}135042[#135042])

Engine::
* Bypass MMap arena grouping as this has caused issues with too many regions being mapped {es-pull}135012[#135012]

Infra/Node Lifecycle::
* Fix systemd notify to use a shared arena {es-pull}135235[#135235]

Ingest Node::
* Correctly apply field path to JSON processor when adding contents to document root {es-pull}135479[#135479]

Machine Learning::
* Add .reindexed-v7-ml-anomalies-* to anomaly results template index pattern {es-pull}135270[#135270]
* Gracefully shutdown model deployment when node is removed from assignment routing {es-pull}134673[#134673]
* Reset health status on successful empty checkpoint {es-pull}135653[#135653] (issue: {es-issue}135650[#135650])

Mapping::
* Fix for creating semantic_text fields on pre-8.11 indices crashing Elasticsearch {es-pull}135845[#135845]

Search::
* Fix KQL case-sensitivity for keyword fields in ES|QL {es-pull}135776[#135776] (issue: {es-issue}135772[#135772])
* Prevent field caps from failing due to can match failure {es-pull}134134[#134134] (issue: {es-issue}116106[#116106])

Transform::
* Fix a bug in the GET _transform API that incorrectly claims some Transform configurations are missing {es-pull}134963[#134963] (issue: {es-issue}134263[#134263])
* Prevent Transform from queuing too many PIT close requests by waiting for PIT to close before finishing the checkpoint {es-pull}134955[#134955] (issue: {es-issue}134925[#134925])

[[enhancement-8.18.8]]
[float]
=== Enhancements

Audit::
* Change reindex to use ::es-redacted:: filtering {es-pull}135414[#135414]

Authorization::
* [Island Browser] Add `manage`, `create_index`, `read`, `index`, `write`, `delete`, permission for third party agent indices `kibana_system` {es-pull}134636[#134636] (issue: {es-issue}134136[#134136])

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