Merge from main

.gitignore

@@ -69,3 +69,6 @@ testfixtures_shared/
 # Generated
 checkstyle_ide.xml
 x-pack/plugin/esql/src/main/generated-src/generated/
+
+# JEnv
+.java-version

build-tools-internal/src/main/java/org/elasticsearch/gradle/internal/ElasticsearchJavaPlugin.java

@@ -31,11 +31,15 @@
 import org.gradle.api.tasks.bundling.Jar;
 import org.gradle.api.tasks.javadoc.Javadoc;
 import org.gradle.external.javadoc.CoreJavadocOptions;
+import org.gradle.jvm.toolchain.JavaLanguageVersion;
+import org.gradle.jvm.toolchain.JavaToolchainService;
 import org.gradle.language.base.plugins.LifecycleBasePlugin;
 
 import java.io.File;
 import java.util.Map;
 
+import javax.inject.Inject;
+
 import static org.elasticsearch.gradle.internal.conventions.util.Util.toStringable;
 import static org.elasticsearch.gradle.internal.util.ParamsUtils.loadBuildParams;
 
@@ -44,6 +48,14 @@
  * common configuration for production code.
  */
 public class ElasticsearchJavaPlugin implements Plugin<Project> {
+
+    private final JavaToolchainService javaToolchains;
+
+    @Inject
+    ElasticsearchJavaPlugin(JavaToolchainService javaToolchains) {
+        this.javaToolchains = javaToolchains;
+    }
+
     @Override
     public void apply(Project project) {
         project.getRootProject().getPlugins().apply(GlobalBuildInfoPlugin.class);
@@ -55,7 +67,7 @@ public void apply(Project project) {
         // configureConfigurations(project);
         configureJars(project, buildParams.get());
         configureJarManifest(project, buildParams.get());
-        configureJavadoc(project);
+        configureJavadoc(project, buildParams.get());
         testCompileOnlyDeps(project);
     }
 
@@ -128,14 +140,18 @@ private static void configureJarManifest(Project project, BuildParameterExtensio
         project.getPluginManager().apply("nebula.info-jar");
     }
 
-    private static void configureJavadoc(Project project) {
+    private void configureJavadoc(Project project, BuildParameterExtension buildParams) {
         project.getTasks().withType(Javadoc.class).configureEach(javadoc -> {
             /*
              * Generate docs using html5 to suppress a warning from `javadoc`
              * that the default will change to html5 in the future.
              */
             CoreJavadocOptions javadocOptions = (CoreJavadocOptions) javadoc.getOptions();
             javadocOptions.addBooleanOption("html5", true);
+
+            javadoc.getJavadocTool().set(javaToolchains.javadocToolFor(spec -> {
+                spec.getLanguageVersion().set(JavaLanguageVersion.of(buildParams.getMinimumRuntimeVersion().getMajorVersion()));
+            }));
         });
 
         TaskProvider<Javadoc> javadoc = project.getTasks().withType(Javadoc.class).named("javadoc");

build-tools-internal/src/main/java/org/elasticsearch/gradle/internal/InternalDistributionBwcSetupPlugin.java

@@ -17,12 +17,12 @@
 import org.gradle.api.Plugin;
 import org.gradle.api.Project;
 import org.gradle.api.Task;
+import org.gradle.api.file.FileSystemOperations;
 import org.gradle.api.file.ProjectLayout;
 import org.gradle.api.model.ObjectFactory;
 import org.gradle.api.plugins.JvmToolchainsPlugin;
 import org.gradle.api.provider.Provider;
 import org.gradle.api.provider.ProviderFactory;
-import org.gradle.api.tasks.Copy;
 import org.gradle.api.tasks.PathSensitivity;
 import org.gradle.api.tasks.TaskProvider;
 import org.gradle.jvm.toolchain.JavaToolchainService;
@@ -54,11 +54,17 @@ public class InternalDistributionBwcSetupPlugin implements Plugin<Project> {
     private final ObjectFactory objectFactory;
     private ProviderFactory providerFactory;
     private JavaToolchainService toolChainService;
+    private FileSystemOperations fileSystemOperations;
 
     @Inject
-    public InternalDistributionBwcSetupPlugin(ObjectFactory objectFactory, ProviderFactory providerFactory) {
+    public InternalDistributionBwcSetupPlugin(
+        ObjectFactory objectFactory,
+        ProviderFactory providerFactory,
+        FileSystemOperations fileSystemOperations
+    ) {
         this.objectFactory = objectFactory;
         this.providerFactory = providerFactory;
+        this.fileSystemOperations = fileSystemOperations;
     }
 
     @Override
@@ -76,7 +82,8 @@ public void apply(Project project) {
                 providerFactory,
                 objectFactory,
                 toolChainService,
-                isCi
+                isCi,
+                fileSystemOperations
             );
         });
     }
@@ -88,7 +95,8 @@ private static void configureBwcProject(
         ProviderFactory providerFactory,
         ObjectFactory objectFactory,
         JavaToolchainService toolChainService,
-        Boolean isCi
+        Boolean isCi,
+        FileSystemOperations fileSystemOperations
     ) {
         ProjectLayout layout = project.getLayout();
         Provider<BwcVersions.UnreleasedVersionInfo> versionInfoProvider = providerFactory.provider(() -> versionInfo);
@@ -120,11 +128,18 @@ private static void configureBwcProject(
         List<DistributionProject> distributionProjects = resolveArchiveProjects(checkoutDir.get(), bwcVersion.get());
 
         // Setup gradle user home directory
-        project.getTasks().register("setupGradleUserHome", Copy.class, copy -> {
-            copy.into(project.getGradle().getGradleUserHomeDir().getAbsolutePath() + "-" + project.getName());
-            copy.from(project.getGradle().getGradleUserHomeDir().getAbsolutePath(), copySpec -> {
-                copySpec.include("gradle.properties");
-                copySpec.include("init.d/*");
+        // We don't use a normal `Copy` task here as snapshotting the entire gradle user home is very expensive. This task is cheap, so
+        // up-to-date checking doesn't buy us much
+        project.getTasks().register("setupGradleUserHome", task -> {
+            task.doLast(t -> {
+                fileSystemOperations.copy(copy -> {
+                    String gradleUserHome = project.getGradle().getGradleUserHomeDir().getAbsolutePath();
+                    copy.into(gradleUserHome + "-" + project.getName());
+                    copy.from(gradleUserHome, copySpec -> {
+                        copySpec.include("gradle.properties");
+                        copySpec.include("init.d/*");
+                    });
+                });
             });
         });
 

build-tools-internal/src/main/java/org/elasticsearch/gradle/internal/MrjarPlugin.java

@@ -86,14 +86,14 @@ public void apply(Project project) {
             configurePreviewFeatures(project, javaExtension.getSourceSets().getByName(SourceSet.TEST_SOURCE_SET_NAME), 21);
             for (int javaVersion : mainVersions) {
                 String mainSourceSetName = SourceSet.MAIN_SOURCE_SET_NAME + javaVersion;
-                SourceSet mainSourceSet = addSourceSet(project, javaExtension, mainSourceSetName, mainSourceSets, javaVersion);
+                SourceSet mainSourceSet = addSourceSet(project, javaExtension, mainSourceSetName, mainSourceSets, javaVersion, true);
                 configureSourceSetInJar(project, mainSourceSet, javaVersion);
                 addJar(project, mainSourceSet, javaVersion);
                 mainSourceSets.add(mainSourceSetName);
                 testSourceSets.add(mainSourceSetName);
 
                 String testSourceSetName = SourceSet.TEST_SOURCE_SET_NAME + javaVersion;
-                SourceSet testSourceSet = addSourceSet(project, javaExtension, testSourceSetName, testSourceSets, javaVersion);
+                SourceSet testSourceSet = addSourceSet(project, javaExtension, testSourceSetName, testSourceSets, javaVersion, false);
                 testSourceSets.add(testSourceSetName);
                 createTestTask(project, buildParams, testSourceSet, javaVersion, mainSourceSets);
             }
@@ -121,7 +121,8 @@ private SourceSet addSourceSet(
         JavaPluginExtension javaExtension,
         String sourceSetName,
         List<String> parentSourceSets,
-        int javaVersion
+        int javaVersion,
+        boolean isMainSourceSet
     ) {
         SourceSet sourceSet = javaExtension.getSourceSets().maybeCreate(sourceSetName);
         for (String parentSourceSetName : parentSourceSets) {
@@ -135,6 +136,13 @@ private SourceSet addSourceSet(
             CompileOptions compileOptions = compileTask.getOptions();
             compileOptions.getRelease().set(javaVersion);
         });
+        if (isMainSourceSet) {
+            project.getTasks().create(sourceSet.getJavadocTaskName(), Javadoc.class, javadocTask -> {
+                javadocTask.getJavadocTool().set(javaToolchains.javadocToolFor(spec -> {
+                    spec.getLanguageVersion().set(JavaLanguageVersion.of(javaVersion));
+                }));
+            });
+        }
         configurePreviewFeatures(project, sourceSet, javaVersion);
 
         // Since we configure MRJAR sourcesets to allow preview apis, class signatures for those

distribution/src/config/jvm.options

@@ -9,7 +9,7 @@
 ## should create one or more files in the jvm.options.d
 ## directory containing your adjustments.
 ##
-## See https://www.elastic.co/guide/en/elasticsearch/reference/@project.minor.version@/jvm-options.html
+## See https://www.elastic.co/guide/en/elasticsearch/reference/@project.minor.version@/advanced-configuration.html#set-jvm-options
 ## for more information.
 ##
 ################################################################

docs/build.gradle

@@ -130,8 +130,9 @@ testClusters.matching { it.name == "yamlRestTest"}.configureEach {
   setting 'xpack.security.enabled', 'true'
   setting 'xpack.security.authc.api_key.enabled', 'true'
   setting 'xpack.security.authc.token.enabled', 'true'
-  // disable the ILM history for doc tests to avoid potential lingering tasks that'd cause test flakiness
+  // disable the ILM and SLM history for doc tests to avoid potential lingering tasks that'd cause test flakiness
   setting 'indices.lifecycle.history_index_enabled', 'false'
+  setting 'slm.history_index_enabled', 'false'
   setting 'xpack.license.self_generated.type', 'trial'
   setting 'xpack.security.authc.realms.file.file.order', '0'
   setting 'xpack.security.authc.realms.native.native.order', '1'

docs/changelog/118266.yaml

@@ -0,0 +1,5 @@
+pr: 118266
+summary: Prevent data nodes from sending stack traces to coordinator when `error_trace=false`
+area: Search
+type: enhancement
+issues: []

docs/changelog/118585.yaml

@@ -0,0 +1,7 @@
+pr: 118585
+summary: Add a generic `rescorer` retriever based on the search request's rescore
+  functionality
+area: Ranking
+type: feature
+issues:
+ - 118327

docs/changelog/118757.yaml

@@ -0,0 +1,5 @@
+pr: 118757
+summary: Improve handling of nested fields in index reader wrappers
+area: Authorization
+type: enhancement
+issues: []

docs/changelog/116944.yaml → docs/changelog/118825.yaml

@@ -1,11 +1,11 @@
-pr: 116944
+pr: 118825
 summary: "Remove support for type, fields, `copy_to` and boost in metadata field definition"
 area: Mapping
 type: breaking
 issues: []
 breaking:
   title: "Remove support for type, fields, copy_to and boost in metadata field definition"
   area: Mapping
-  details: The type, fields, copy_to and boost parameters are no longer supported in metadata field definition
+  details: The type, fields, copy_to and boost parameters are no longer supported in metadata field definition starting with version 9.
   impact: Users providing type, fields, copy_to or boost as part of metadata field definition should remove them from their mappings.
   notable: false

docs/changelog/118890.yaml

@@ -0,0 +1,5 @@
+pr: 118890
+summary: Add action to create index from a source index
+area: Data streams
+type: enhancement
+issues: []

docs/changelog/119007.yaml

@@ -0,0 +1,6 @@
+pr: 119007
+summary: Block-writes cannot be added after read-only
+area: Data streams
+type: bug
+issues:
+ - 119002

docs/reference/connector/docs/connectors-content-extraction.asciidoc

@@ -8,7 +8,7 @@ The logic for content extraction is defined in {connectors-python}/connectors/ut
 While intended primarily for PDF and Microsoft Office formats, you can use any of the <<es-connectors-content-extraction-supported-file-types, supported formats>>.
 
 Enterprise Search uses an {ref}/ingest.html[Elasticsearch ingest pipeline^] to power the web crawler's binary content extraction.
-The default pipeline, `ent-search-generic-ingestion`, is automatically created when Enterprise Search first starts.
+The default pipeline, `search-default-ingestion`, is automatically created when Enterprise Search first starts.
 
 You can {ref}/ingest.html#create-manage-ingest-pipelines[view^] this pipeline in Kibana.
 Customizing your pipeline usage is also an option.

docs/reference/connector/docs/connectors-filter-extract-transform.asciidoc

@@ -13,7 +13,7 @@ The following diagram provides an overview of how content extraction, sync rules
 [.screenshot]
 image::images/pipelines-extraction-sync-rules.png[Architecture diagram of data pipeline with content extraction, sync rules, and ingest pipelines]
 
-By default, only the connector specific logic (2) and the default `ent-search-generic-ingestion` pipeline (6) extract and transform your data, as configured in your deployment.
+By default, only the connector specific logic (2) and the default `search-default-ingestion` pipeline (6) extract and transform your data, as configured in your deployment.
 
 The following tools are available for more advanced use cases:
 
@@ -50,4 +50,4 @@ Use ingest pipelines for data enrichment, normalization, and more.
 
 Elastic connectors use a default ingest pipeline, which you can copy and customize to meet your needs.
 
-Refer to {ref}/ingest-pipeline-search.html[ingest pipelines in Search] in the {es} documentation.
+Refer to {ref}/ingest-pipeline-search.html[ingest pipelines in Search] in the {es} documentation.

docs/reference/ingest/search-inference-processing.asciidoc

@@ -88,7 +88,7 @@ The `monitor_ml` <<security-privileges, Elasticsearch cluster privilege>> is req
 
 To create the index-specific ML inference pipeline, go to *Search -> Content -> Indices -> <your index> -> Pipelines* in the Kibana UI.
 
-If you only see the `ent-search-generic-ingestion` pipeline, you will need to click *Copy and customize* to create index-specific pipelines.
+If you only see the `search-default-ingestion` pipeline, you will need to click *Copy and customize* to create index-specific pipelines.
 This will create the `{index_name}@ml-inference` pipeline.
 
 Once your index-specific ML inference pipeline is ready, you can add inference processors that use your ML trained models.