Merge branch 'main' into windows/hard_link_check

Author: rjernst

branches.json

@@ -4,6 +4,9 @@
     {
       "branch": "main"
     },
+    {
+      "branch": "9.1"
+    },
     {
       "branch": "9.0"
     },

docs/changelog/122497.yaml

@@ -0,0 +1,5 @@
+pr: 122497
+summary: Check if index patterns conform to valid format before validation
+area: CCS
+type: enhancement
+issues: []

docs/changelog/129370.yaml

@@ -0,0 +1,7 @@
+pr: 129370
+summary: Avoid dropping aggregate groupings in local plans
+area: ES|QL
+type: bug
+issues:
+ - 129811
+ - 128054

docs/changelog/129738.yaml

@@ -0,0 +1,5 @@
+pr: 129738
+summary: Watch SSL files instead of directories
+area: TLS
+type: bug
+issues: []

docs/changelog/129884.yaml

@@ -0,0 +1,5 @@
+pr: 129884
+summary: Move to the Cohere V2 API for new inference endpoints
+area: Machine Learning
+type: enhancement
+issues: []

docs/changelog/129962.yaml

@@ -0,0 +1,5 @@
+pr: 129962
+summary: Simplified Linear & RRF Retrievers - Return error on empty fields param
+area: Search
+type: bug
+issues: []

docs/changelog/130032.yaml

@@ -0,0 +1,12 @@
+pr: 130032
+summary: ES|QL cross-cluster querying is now generally available
+area: ES|QL
+type: feature
+issues: []
+highlight:
+  title: ES|QL cross-cluster querying is now generally available
+  body: |-
+    The ES|QL Cross-Cluster querying feature has been in technical preview since 8.13.
+    As of releases 8.19.0 and 9.1.0 this is now generally available.
+    This feature allows you to run ES|QL queries across multiple clusters.
+  notable: true

docs/extend/creating-classic-plugins.md

@@ -136,13 +136,12 @@ org.example.module: # or 'ALL-UNNAMED' if the plugin is non-modular
 Allows code to access the filesystem, to read or write paths as specified by the entitlement's fields. The filesystem of the OS hosting {{es}} may contain sensitive files, for example credentials. Some files are meant to be always accessible to {{es}}, but plugins can not access them directly: {{es}} enforces that certain files can only be read by its core code, while some other files can not be read or written at all. A plugin is always granted `read` access to the {{es}} config directory and `read_write` access to the temp directory; if the plugin requires to read, write or access additional files or directories, it must specify them via this entitlement.
 
 It is possible to specify 3 different types of file entitlement:
-  - `path` to specify an absolute path
-  - `relative_path` to specify a relative path. The path will be resolved via the `relative_to` field, which is used to qualify the relative path. It can be a specific {{es}} directory (`config` or `data`), or to the user home directory (`home`) (the home of the user running {{es}})
-  - `relative_path` to specify a path resolved via the `relative_to` field, which can have the following values:
-    - `config`: the {{es}} [config directory](https://www.elastic.co/guide/en/elasticsearch/reference/current/settings.html#config-files-location)
-    - `data`: the {{es}} [data directory](https://www.elastic.co/guide/en/elasticsearch/reference/current/path-settings-overview.html)
-    - `home`: the home directory of the user running {{es}}
-  - `path_setting` to specify a path defined via an {{es}} setting. The path can be absolute or relative; in the latter case, the path will be resolved using the `basedir_if_relative` path (which can assume the same values as `relative_to`)
+1. `path` to specify an absolute path
+2. `relative_path` to specify a relative path. Use the `relative_to` field to qualify the relative path. `relative_to` accepts the following options:
+   - `config`: the {{es}} [config directory](https://www.elastic.co/guide/en/elasticsearch/reference/current/settings.html#config-files-location)
+   - `data`: the {{es}} [data directory](https://www.elastic.co/guide/en/elasticsearch/reference/current/path-settings-overview.html)
+   - `home`: the home directory of the user running {{es}}
+3. `path_setting` to specify a path defined via an {{es}} setting. The path can be absolute or relative; in the latter case, the path will be resolved using the `basedir_if_relative` path (which can assume the same values as `relative_to`)
 
 Each of the 3 types has some additional fields:
 - `mode` (required): can be either `read` or `read_write`

docs/reference/elasticsearch/index-settings/slow-log.md

@@ -8,7 +8,7 @@ navigation_title: Slow log
 
 The slow log records database searching and indexing events that have execution durations above specified thresholds. You can use these logs to investigate analyze or troubleshoot your cluster’s historical search and indexing performance.
 
-Slow logs report task duration at the shard level for searches, and at the index level for indexing, but might not encompass the full task execution time observed on the client. For example, slow logs don’t surface HTTP network delays or the impact of [task queues](docs-content://troubleshoot/elasticsearch/task-queue-backlog.md).
+Slow logs report task duration at the shard level for searches, and at the index level for indexing, but might not encompass the full task execution time observed on the client. For example, slow logs don’t surface HTTP network delays or the impact of [task queues](docs-content://troubleshoot/elasticsearch/task-queue-backlog.md). For more information about the higher-level operations affecting response times, refer to [Reading and writing documents](docs-content://deploy-manage/distributed-architecture/reading-and-writing-documents.md).
 
 Events that meet the specified threshold are emitted into [{{es}} logging](docs-content://deploy-manage/monitor/logging-configuration/update-elasticsearch-logging-levels.md) under the `fileset.name` of `slowlog`. These logs can be viewed in the following locations:
 

docs/reference/query-languages/esql/_snippets/commands/layout/change_point.md

@@ -4,12 +4,10 @@
 The `CHANGE_POINT` command requires a [platinum license](https://www.elastic.co/subscriptions).
 :::
 
-::::{warning}
-This functionality is in technical preview and may be
-changed or removed in a future release. Elastic will work to fix any
-issues, but features in technical preview are not subject to the support
-SLA of official GA features.
-::::
+```yaml {applies_to}
+serverless: preview
+stack: preview 9.1.0
+```
 
 `CHANGE_POINT` detects spikes, dips, and change points in a metric.