Deprecate indices.merge.scheduler.use_thread_pool setting (#129464) (#…

…129629)

This deprecates the `indices.merge.scheduler.use_thread_pool` setting
that was introduced in
#120869 because this
setting should not normally be used, unless instructed so by engineering
to get around temporary issues with the new threadpool-based merge
scheduler.

[8.18] Fix NPE in flat_bbq scorer when all vectors are missing (#129548…

…) (#129625)

* Fix NPE in flat_bbq scorer when all vectors are missing (#129548)

It is possible to get all the way down to the knn format reader and
there be no vectors in the index.

This execution path is possible if utilizing nested queries (which
bypasses the higher level checks in
`KnnFloatVectorQuery#approximateSearch`).

bbq_flat should check for the existence of vectors before attempting to
create the scorer.

(cherry picked from commit 80667d0)

* fixing compilation

[7.17] Fix custom naming on plugin based DRA maven artifacts (#129622)

[apm-data] fix(8.17): update resource version (#129539)

* update resource version

We introduced some changes in 8.17 that did not update the
resource version. As such for cluster upgrading from an
older version Elasticsearch would not detect the need to
apply the new templates, effectively not introducing the
new changes

* Update docs/changelog/129539.yaml

Replace chars (#128439) (#128450)

(cherry picked from commit 314dc1a)

Co-authored-by: Fabrizio Ferri-Benedetti <[email protected]>

[ML] Use internal user for internal inference action (#128327) (#128333)

* Using correct origin for inference action

* Update docs/changelog/128327.yaml

* [CI] Auto commit changes from spotless

---------

Co-authored-by: elasticsearchmachine <[email protected]>
(cherry picked from commit 19e18a9)

# Conflicts:
#	x-pack/plugin/esql/src/main/java/org/elasticsearch/xpack/esql/inference/InferenceRunner.java

Fix: Add NamedWriteable for RuleQueryRankDoc (#128153) (#128268)

* Add NamedWriteable for QueryRule rank doc

* Update test

* Update docs/changelog/128153.yaml

* Add multi cluster test for query rules

* Commenting out code - explicitly trying to spur a test failure

* [CI] Auto commit changes from spotless

* Streamline test for multi cluster

* Revert changes to try to break test

* Fix compile error

---------

Co-authored-by: elasticsearchmachine <[email protected]>
(cherry picked from commit b335c1a)

# Conflicts:
#	x-pack/plugin/ent-search/qa/rest/src/yamlRestTest/resources/rest-api-spec/test/entsearch/rules/40_rule_query_search.yml

ESQL: No, line noise isn't a valid ip (#127527) (#127539)

I wrote an `&&` when I meant and `||` in #126338 and that caused some
impressive looking line noise to parse as valid ipv4 addresses.
Randomized tests caught it eventually.

Enable FAILURE_STORE feature flag for LogsIndexModeFullClusterRestart…

…IT (#127480) (#127542)

(cherry picked from commit 71a6c7f)

[ML] Fix text structure NPE when fields in list have null value (#125922

) (#127508)

Co-authored-by: weizijun <[email protected]>