Merge branch 'main' into st_extent_optimize_geoshape

docs/changelog/119227.yaml

@@ -0,0 +1,13 @@
+pr: 119227
+summary: Remove unfreeze REST endpoint
+area: Indices APIs
+type: breaking
+issues: []
+breaking:
+  title: Remove unfreeze REST endpoint
+  area: REST API
+  details: >-
+    The `/{index}/_unfreeze` REST endpoint is no longer supported. This API was deprecated, and the corresponding
+    `/{index}/_freeze` endpoint was removed in 8.0.
+  impact: None, since it is not possible to have a frozen index in a version which is readable by Elasticsearch 9.0
+  notable: false

docs/changelog/119846.yaml

@@ -0,0 +1,12 @@
+pr: 119846
+summary: Drop support for brackets from METADATA syntax
+area: ES|QL
+type: deprecation
+issues:
+ - 115401
+deprecation:
+  title: Drop support for brackets from METADATA syntax
+  area: ES|QL
+  details: Please describe the details of this change for the release notes. You can
+    use asciidoc.
+  impact: Please describe the impact of this change to users

docs/reference/indices.asciidoc

@@ -24,7 +24,6 @@ index settings, aliases, mappings, and index templates.
 * <<indices-split-index>>
 * <<indices-clone-index>>
 * <<indices-rollover-index>>
-* <<unfreeze-index-api>>
 * <<indices-resolve-index-api>>
 * <<indices-resolve-cluster-api>>
 * <<indices-downsample-data-stream>>
@@ -143,6 +142,5 @@ include::indices/shrink-index.asciidoc[]
 include::indices/simulate-index.asciidoc[]
 include::indices/simulate-template.asciidoc[]
 include::indices/split-index.asciidoc[]
-include::indices/apis/unfreeze.asciidoc[]
 include::indices/update-settings.asciidoc[]
 include::indices/put-mapping.asciidoc[]

docs/reference/indices/index-mgmt.asciidoc

@@ -43,7 +43,7 @@ For more information on managing indices, refer to <<indices, Index APIs>>.
 
 * To filter the list of indices, use the search bar or click a badge.
 Badges indicate if an index is a <<ccr-put-follow,follower index>>, a
-<<rollup-get-rollup-index-caps,rollup index>>, or <<unfreeze-index-api,frozen>>.
+<<rollup-get-rollup-index-caps,rollup index>>, or <<frozen-indices,frozen>>.
 
 * To drill down into the index
 <<mapping,mappings>>, <<index-modules-settings,settings>>, and statistics,

docs/reference/redirects.asciidoc

@@ -156,10 +156,16 @@ See <<restore-entire-cluster>>.
 The freeze index API was removed in 8.0.
 // tag::frozen-removal-explanation[]
 Frozen indices are no longer useful due to
-https://www.elastic.co/blog/significantly-decrease-your-elasticsearch-heap-memory-usage[recent
-improvements in heap memory usage].
+https://www.elastic.co/blog/significantly-decrease-your-elasticsearch-heap-memory-usage[improvements
+in heap memory usage].
 // end::frozen-removal-explanation[]
 
+[role="exclude",id="unfreeze-index-api"]
+=== Unfreeze index API
+
+The unfreeze index API was removed in 9.0.
+include::redirects.asciidoc[tag=frozen-removal-explanation]
+
 [role="exclude",id="ilm-freeze"]
 === Freeze {ilm-init} action
 
@@ -1749,8 +1755,10 @@ See <<search-terms-enum>>.
 === Frozen indices
 
 // tag::frozen-index-redirect[]
-
-For API documentation, see <<unfreeze-index-api>>.
+Older versions of {es} provided the option to reduce the amount of data kept in memory for an index, at the expense of
+increasing search latency. This was known as 'freezing' the index.
+include::redirects.asciidoc[tag=frozen-removal-explanation]
+The freeze index API was removed in 8.0, and the unfreeze index API was removed in 9.0.
 // end::frozen-index-redirect[]
 
 [role="exclude",id="best_practices"]

docs/reference/sql/language/indices.asciidoc

@@ -100,7 +100,7 @@ requires the keyword `LIKE` for SQL `LIKE` pattern.
 [[sql-index-frozen]]
 === Frozen Indices
 
-By default, {es-sql} doesn't search <<unfreeze-index-api,frozen indices>>. To
+By default, {es-sql} doesn't search <<frozen-indices,frozen indices>>. To
 search frozen indices, use one of the following features:
 
 dedicated configuration parameter::

modules/repository-s3/src/javaRestTest/java/org/elasticsearch/repositories/s3/RepositoryS3MinioBasicCredentialsRestIT.java

@@ -19,13 +19,15 @@
 import org.junit.rules.RuleChain;
 import org.junit.rules.TestRule;
 
+import java.util.Locale;
+
 @ThreadLeakFilters(filters = { TestContainersThreadFilter.class })
 @ThreadLeakScope(ThreadLeakScope.Scope.NONE) // https://github.com/elastic/elasticsearch/issues/102482
 public class RepositoryS3MinioBasicCredentialsRestIT extends AbstractRepositoryS3RestTestCase {
 
-    private static final String PREFIX = getIdentifierPrefix("RepositoryS3MinioBasicCredentialsRestIT");
+    private static final String PREFIX = getIdentifierPrefix("RepositoryS3MinioBasicCredentialsRestIT").toLowerCase(Locale.ROOT);
     private static final String BUCKET = PREFIX + "bucket";
-    private static final String BASE_PATH = PREFIX + "base_path";
+    private static final String BASE_PATH = PREFIX + "base-path";
     private static final String ACCESS_KEY = PREFIX + "access-key";
     private static final String SECRET_KEY = PREFIX + "secret-key";
     private static final String CLIENT = "minio_client";

test/fixtures/minio-fixture/src/main/java/org/elasticsearch/test/fixtures/minio/MinioTestContainer.java

@@ -15,7 +15,7 @@
 public final class MinioTestContainer extends DockerEnvironmentAwareTestContainer {
 
     private static final int servicePort = 9000;
-    public static final String DOCKER_BASE_IMAGE = "minio/minio:RELEASE.2021-03-01T04-20-55Z";
+    public static final String DOCKER_BASE_IMAGE = "minio/minio:RELEASE.2024-12-18T13-15-44Z";
     private final boolean enabled;
 
     public MinioTestContainer(boolean enabled, String accessKey, String secretKey, String bucketName) {

x-pack/plugin/esql/src/main/antlr/EsqlBaseParser.g4

@@ -143,18 +143,9 @@ indexString
     ;
 
 metadata
-    : metadataOption
-    | deprecated_metadata
-    ;
-
-metadataOption
     : METADATA UNQUOTED_SOURCE (COMMA UNQUOTED_SOURCE)*
     ;
 
-deprecated_metadata
-    : OPENING_BRACKET metadataOption CLOSING_BRACKET
-    ;
-
 metricsCommand
     : DEV_METRICS indexPattern (COMMA indexPattern)* aggregates=aggFields? (BY grouping=fields)?
     ;