Merge branch '8.x' into 8x-inference-index-fix

Author: davidkyle

docs/changelog/113588.yaml

@@ -0,0 +1,5 @@
+pr: 113588
+summary: Add asset criticality indices for `kibana_system_user`
+area: Security
+type: enhancement
+issues: []

docs/changelog/114742.yaml

@@ -0,0 +1,5 @@
+pr: 114742
+summary: Adding support for additional mapping to simulate ingest API
+area: Ingest Node
+type: enhancement
+issues: []

docs/changelog/114774.yaml

@@ -0,0 +1,5 @@
+pr: 114774
+summary: "ESQL: Add support for multivalue fields in Arrow output"
+area: ES|QL
+type: enhancement
+issues: []

docs/reference/ingest/apis/simulate-ingest.asciidoc

@@ -108,6 +108,14 @@ POST /_ingest/_simulate
       "index_patterns": ["my-index-*"],
       "composed_of": ["component_template_1", "component_template_2"]
     }
+  },
+  "mapping_addition": { <4>
+    "dynamic": "strict",
+    "properties": {
+      "foo": {
+        "type": "keyword"
+      }
+    }
   }
 }
 ----
@@ -117,6 +125,7 @@ POST /_ingest/_simulate
 These templates can be used to change the pipeline(s) used, or to modify the mapping that will be used to validate the result.
 <3> This replaces the existing `my-index-template` index template with the contents given here for the duration of this request.
 These templates can be used to change the pipeline(s) used, or to modify the mapping that will be used to validate the result.
+<4> This mapping is merged into the index's final mapping just before validation. It is used only for the duration of this request.
 
 [[simulate-ingest-api-request]]
 ==== {api-request-title}
@@ -246,6 +255,10 @@ include::{es-ref-dir}/indices/put-index-template.asciidoc[tag=request-body]
 
 ====
 
+`mapping_addition`::
+(Optional, <<mapping,mapping object>>)
+Definition of a mapping that will be merged into the index's mapping for validation during the course of this request.
+
 [[simulate-ingest-api-example]]
 ==== {api-examples-title}
 

muted-tests.yml

@@ -309,6 +309,9 @@ tests:
 - class: org.elasticsearch.xpack.esql.qa.mixed.MixedClusterEsqlSpecIT
   method: test {categorize.Categorize ASYNC}
   issue: https://github.com/elastic/elasticsearch/issues/113721
+- class: org.elasticsearch.xpack.esql.qa.mixed.MixedClusterEsqlSpecIT
+  method: test {categorize.Categorize SYNC}
+  issue: https://github.com/elastic/elasticsearch/issues/113722
 - class: org.elasticsearch.action.search.SearchQueryThenFetchAsyncActionTests
   method: testMinimumVersionSameAsNewVersion
   issue: https://github.com/elastic/elasticsearch/issues/114593
@@ -371,6 +374,11 @@ tests:
 - class: org.elasticsearch.reservedstate.service.FileSettingsServiceTests
   method: testProcessFileChanges
   issue: https://github.com/elastic/elasticsearch/issues/115280
+- class: org.elasticsearch.xpack.esql.qa.mixed.MixedClusterEsqlSpecIT
+  issue: https://github.com/elastic/elasticsearch/issues/115315
+- class: org.elasticsearch.upgrades.UpgradeClusterClientYamlTestSuiteIT
+  method: test {p0=mixed_cluster/80_transform_jobs_crud/Test GET, start, and stop old cluster batch transforms}
+  issue: https://github.com/elastic/elasticsearch/issues/115319
 
 # Examples:
 #