Merge branch 'master' into compile-with-jdk-9

* master: (21 commits)
  [GEO] Add WKT Support to GeoBoundingBoxQueryBuilder
  Painless: Add whitelist extensions (elastic#28161)
  Fix daitch_mokotoff phonetic filter to use the dedicated Lucene filter (elastic#28225)
  Avoid doing redundant work when checking for self references. (elastic#26927)
  Fix casts in HotThreads. (elastic#27578)
  Ignore the `-snapshot` suffix when comparing the Lucene version in the build and the docs. (elastic#27927)
  Allow update of `eager_global_ordinals` on `_parent`. (elastic#28014)
  Fix NPE on composite aggregation with sub-aggregations that need scores (elastic#28129)
  `MockTcpTransport` to connect asynchronously (elastic#28203)
  Fix synonym phrase query expansion for cross_fields parsing (elastic#28045)
  Introduce elasticsearch-core jar (elastic#28191)
  elastic#28218: Update the Lucene version for 6.2.0 after backport
  upgrade to lucene 7.2.1 (elastic#28218)
  [Docs] Fix an error in painless-types.asciidoc (elastic#28221)
  Adds metadata to rewritten aggregations (elastic#28185)
  Update version of TaskInfo header serialization after backport
  TEST: Tightens file-based condition in peer-recovery
  Correct backport replica rollback to 6.2 (elastic#28181)
  Backport replica rollback to 6.2 (elastic#28181)
  Rename deleteLocalTranslog to createNewTranslog
  ...

Author: jasontedor

build.gradle

@@ -183,6 +183,7 @@ subprojects {
     "org.elasticsearch:rest-api-spec:${version}": ':rest-api-spec',
     "org.elasticsearch:elasticsearch:${version}": ':server',
     "org.elasticsearch:elasticsearch-cli:${version}": ':server:cli',
+    "org.elasticsearch:elasticsearch-core:${version}": ':libs:elasticsearch-core',
     "org.elasticsearch:elasticsearch-nio:${version}": ':libs:elasticsearch-nio',
     "org.elasticsearch.client:elasticsearch-rest-client:${version}": ':client:rest',
     "org.elasticsearch.client:elasticsearch-rest-client-sniffer:${version}": ':client:sniffer',

buildSrc/version.properties

@@ -1,5 +1,5 @@
 elasticsearch     = 7.0.0-alpha1
-lucene            = 7.2.0
+lucene            = 7.2.1
 
 # optional dependencies
 spatial4j         = 0.6

client/rest/build.gradle

@@ -72,6 +72,7 @@ forbiddenApisTest {
 }
 
 // JarHell is part of es server, which we don't want to pull in
+// TODO: Not anymore. Now in elasticsearch-core
 jarHell.enabled=false
 
 namingConventions {

client/sniffer/build.gradle

@@ -75,6 +75,7 @@ dependencyLicenses {
 }
 
 // JarHell is part of es server, which we don't want to pull in
+// TODO: Not anymore. Now in elasticsearch-core
 jarHell.enabled=false
 
 namingConventions {

client/test/build.gradle

@@ -49,6 +49,7 @@ forbiddenApisTest {
 }
 
 // JarHell is part of es server, which we don't want to pull in
+// TODO: Not anymore. Now in elasticsearch-core
 jarHell.enabled=false
 
 // TODO: should we have licenses for our test deps?

docs/Versions.asciidoc

@@ -1,7 +1,7 @@
 :version:               7.0.0-alpha1
 :major-version:         7.x
-:lucene_version:        7.2.0
-:lucene_version_path:   7_2_0
+:lucene_version:        7.2.1
+:lucene_version_path:   7_2_1
 :branch:                master
 :jdk:                   1.8.0_131
 :jdk_major:             8

docs/painless/painless-types.asciidoc

@@ -311,7 +311,7 @@ to floating point types.
 | int   | explicit | explicit | explicit |          | implicit | implicit | implicit
 | long  | explicit | explicit | explicit | explicit |          | implicit | implicit
 | float | explicit | explicit | explicit | explicit | explicit |          | implicit
-| float | explicit | explicit | explicit | explicit | explicit | explicit |
+| double | explicit | explicit | explicit | explicit | explicit | explicit |
 |====
 
 
@@ -376,7 +376,7 @@ cast would normally be required between the non-def types.
 def x;          // Declare def variable x and set it to null
 x = 3;          // Set the def variable x to the literal 3 with an implicit
                 //   cast from int to def
-double a = x;   // Declare double variable y and set it to def variable x,
+double a = x;   // Declare double variable a and set it to def variable x,
                 //   which contains a double
 int b = x;      // ERROR: Results in a run-time error because an explicit cast is
                 //   required to cast from a double to an int

docs/reference/query-dsl/geo-bounding-box-query.asciidoc

@@ -180,6 +180,31 @@ GET /_search
 --------------------------------------------------
 // CONSOLE
 
+[float]
+===== Bounding Box as Well-Known Text (WKT)
+
+[source,js]
+--------------------------------------------------
+GET /_search
+{
+    "query": {
+        "bool" : {
+            "must" : {
+                "match_all" : {}
+            },
+            "filter" : {
+                "geo_bounding_box" : {
+                    "pin.location" : {
+                        "wkt" : "BBOX (-74.1, -71.12, 40.73, 40.01)"
+                    }
+                }
+            }
+        }
+    }
+}
+--------------------------------------------------
+// CONSOLE
+
 [float]
 ===== Geohash
 

libs/elasticsearch-core/build.gradle

@@ -0,0 +1,81 @@
+import org.elasticsearch.gradle.precommit.PrecommitTasks
+
+/*
+ * Licensed to Elasticsearch under one or more contributor
+ * license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright
+ * ownership. Elasticsearch licenses this file to you under
+ * the Apache License, Version 2.0 (the "License"); you may
+ * not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+apply plugin: 'elasticsearch.build'
+apply plugin: 'nebula.optional-base'
+apply plugin: 'nebula.maven-base-publish'
+apply plugin: 'nebula.maven-scm'
+
+archivesBaseName = 'elasticsearch-core'
+
+publishing {
+    publications {
+        nebula {
+            artifactId = archivesBaseName
+        }
+    }
+}
+
+dependencies {
+    compile "org.apache.logging.log4j:log4j-api:${versions.log4j}"
+
+    testCompile "com.carrotsearch.randomizedtesting:randomizedtesting-runner:${versions.randomizedrunner}"
+    testCompile "junit:junit:${versions.junit}"
+    testCompile "org.hamcrest:hamcrest-all:${versions.hamcrest}"
+
+    if (isEclipse == false || project.path == ":libs:elasticsearch-core-tests") {
+        testCompile("org.elasticsearch.test:framework:${version}") {
+            exclude group: 'org.elasticsearch', module: 'elasticsearch-core'
+        }
+    }
+}
+
+forbiddenApisMain {
+    // elasticsearch-core does not depend on server
+    // TODO: Need to decide how we want to handle for forbidden signatures with the changes to core
+    signaturesURLs = [PrecommitTasks.getResource('/forbidden/jdk-signatures.txt')]
+}
+
+if (isEclipse) {
+    // in eclipse the project is under a fake root, we need to change around the source sets
+    sourceSets {
+        if (project.path == ":libs:elasticsearch-core") {
+            main.java.srcDirs = ['java']
+            main.resources.srcDirs = ['resources']
+        } else {
+            test.java.srcDirs = ['java']
+            test.resources.srcDirs = ['resources']
+        }
+    }
+}
+
+thirdPartyAudit.excludes = [
+        // from log4j
+        'org/osgi/framework/AdaptPermission',
+        'org/osgi/framework/AdminPermission',
+        'org/osgi/framework/Bundle',
+        'org/osgi/framework/BundleActivator',
+        'org/osgi/framework/BundleContext',
+        'org/osgi/framework/BundleEvent',
+        'org/osgi/framework/SynchronousBundleListener',
+        'org/osgi/framework/wiring/BundleWire',
+        'org/osgi/framework/wiring/BundleWiring'
+]

libs/elasticsearch-core/licenses/log4j-api-2.9.1.jar.sha1

@@ -0,0 +1 @@
+7a2999229464e7a324aa503c0a52ec0f05efe7bd