Merge remote-tracking branch 'es/ccr' into ccr_create_and_follow

* es/ccr: (50 commits)
  Reduce CLI scripts to one-liners (elastic#30759)
  SQL: Preserve scoring in bool queries (elastic#30730)
  QA: Switch rolling upgrade to 3 nodes (elastic#30728)
  [TEST] Enable DEBUG logging on testAutoQueueSizingWithMax
  [ML] Don't install empty ML metadata on startup (elastic#30751)
  Add assertion on removing copy_settings (elastic#30748)
  bump lucene version for 6_3_0
  [DOCS] Mark painless execute api as experimental (elastic#30710)
  disable annotation processor for docs (elastic#30610)
  Add more script contexts (elastic#30721)
  Fix default shards count in create index docs (elastic#30747)
  Mute testCorruptFileThenSnapshotAndRestore
  Scripting: Remove getDate methods from ScriptDocValues (elastic#30690)
  Upgrade to Lucene-7.4.0-snapshot-59f2b7aec2 (elastic#30726)
  [Docs] Fix single page :docs:check invocation (elastic#30725)
  Docs: Add uptasticsearch to list of clients (elastic#30738)
  [DOCS] Removes out-dated x-pack/docs/en/index.asciidoc
  [DOCS] Removes redundant index.asciidoc files (elastic#30707)
  [TEST] Reduce forecast overflow to disk test memory limit (elastic#30727)
  Plugins: Remove meta plugins (elastic#30670)
  ...

TESTING.asciidoc

@@ -25,6 +25,46 @@ run it using Gradle:
 ./gradlew run
 -------------------------------------
 
+==== Launching and debugging from an IDE
+
+If you want to run Elasticsearch from your IDE, the `./gradlew run` task
+supports a remote debugging option:
+
+---------------------------------------------------------------------------
+./gradlew run --debug-jvm
+---------------------------------------------------------------------------
+
+==== Distribution
+
+By default a node is started with the zip distribution.
+In order to start with a different distribution use the `-Drun.distribution` argument.
+
+To for example start the open source distribution:
+
+-------------------------------------
+./gradlew run -Drun.distribution=oss-zip
+-------------------------------------
+
+==== License type
+
+By default a node is started with the `basic` license type.
+In order to start with a different license type use the `-Drun.license_type` argument.
+
+In order to start a node with a trial license execute the following command:
+
+-------------------------------------
+./gradlew run -Drun.license_type=trial
+-------------------------------------
+
+This enables security and other paid features and adds a superuser with the username: `elastic-admin` and
+password: `elastic-password`.
+
+==== Other useful arguments
+
+In order to start a node with a different max heap space add: `-Dtests.heap.size=4G`
+In order to disable annotations add: `-Dtests.asserts=false`
+In order to set an Elasticsearch setting, provide a setting with the following prefix: `-Dtests.es.`
+
 === Test case filtering.
 
 - `tests.class` is a class-filtering shell-like glob pattern,
@@ -572,15 +612,6 @@ as its build system. Since the switch to Gradle though, this is no longer possib
 the code currently used to build Elasticsearch does not allow JaCoCo to recognize its tests.
 For more information on this, see the discussion in https://github.com/elastic/elasticsearch/issues/28867[issue #28867].
 
-== Launching and debugging from an IDE
-
-If you want to run Elasticsearch from your IDE, the `./gradlew run` task
-supports a remote debugging option:
-
----------------------------------------------------------------------------
-./gradlew run --debug-jvm
----------------------------------------------------------------------------
-
 == Debugging remotely from an IDE
 
 If you want to run Elasticsearch and be able to remotely attach the process

buildSrc/src/main/groovy/org/elasticsearch/gradle/test/ClusterFormationTasks.groovy

@@ -24,7 +24,7 @@ import org.elasticsearch.gradle.BuildPlugin
 import org.elasticsearch.gradle.LoggedExec
 import org.elasticsearch.gradle.Version
 import org.elasticsearch.gradle.VersionProperties
-import org.elasticsearch.gradle.plugin.MetaPluginBuildPlugin
+
 import org.elasticsearch.gradle.plugin.PluginBuildPlugin
 import org.elasticsearch.gradle.plugin.PluginPropertiesExtension
 import org.gradle.api.AntBuilder
@@ -842,19 +842,15 @@ class ClusterFormationTasks {
     }
 
     static void verifyProjectHasBuildPlugin(String name, Version version, Project project, Project pluginProject) {
-        if (pluginProject.plugins.hasPlugin(PluginBuildPlugin) == false && pluginProject.plugins.hasPlugin(MetaPluginBuildPlugin) == false) {
+        if (pluginProject.plugins.hasPlugin(PluginBuildPlugin) == false) {
             throw new GradleException("Task [${name}] cannot add plugin [${pluginProject.path}] with version [${version}] to project's " +
-                    "[${project.path}] dependencies: the plugin is not an esplugin or es_meta_plugin")
+                    "[${project.path}] dependencies: the plugin is not an esplugin")
         }
     }
 
-    /** Find the plugin name in the given project, whether a regular plugin or meta plugin. */
+    /** Find the plugin name in the given project. */
     static String findPluginName(Project pluginProject) {
         PluginPropertiesExtension extension = pluginProject.extensions.findByName('esplugin')
-        if (extension != null) {
-            return extension.name
-        } else {
-            return pluginProject.extensions.findByName('es_meta_plugin').name
-        }
+        return extension.name
     }
 }

buildSrc/src/main/groovy/org/elasticsearch/gradle/test/StandaloneTestPlugin.groovy

@@ -24,6 +24,7 @@ import org.elasticsearch.gradle.BuildPlugin
 import org.gradle.api.Plugin
 import org.gradle.api.Project
 import org.gradle.api.plugins.JavaBasePlugin
+import org.gradle.api.tasks.compile.JavaCompile
 
 /**
  * Configures the build to compile against Elasticsearch's test framework and
@@ -49,5 +50,12 @@ public class StandaloneTestPlugin implements Plugin<Project> {
         test.testClassesDir project.sourceSets.test.output.classesDir
         test.mustRunAfter(project.precommit)
         project.check.dependsOn(test)
+
+        project.tasks.withType(JavaCompile) {
+            // This will be the default in Gradle 5.0
+            if (options.compilerArgs.contains("-processor") == false) {
+                options.compilerArgs << '-proc:none'
+            }
+        }
     }
 }

buildSrc/version.properties

@@ -1,5 +1,5 @@
 elasticsearch     = 7.0.0-alpha1
-lucene            = 7.4.0-snapshot-6705632810
+lucene            = 7.4.0-snapshot-59f2b7aec2
 
 # optional dependencies
 spatial4j         = 0.7