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

* es/master:
  Add Index UUID to `/_stats` Response (#31871)
  Painless: Move and Rename Several Methods in the lookup package (#32105)
  Bypass highlight query terms extraction on empty fields (#32090)
  Switch non-x-pack to new style requests (#32106)
  [Rollup] Add new capabilities endpoint for concrete rollup indices (#30401)
  Revert "[test] disable packaging tests for suse boxes"
  SQL: allow LEFT and RIGHT as function names (#32066)
  DOCS: put LIMIT 10 to the SQL query (#32065)
  [test] turn on host io cache for opensuse (#32053)
  Tweaked Elasticsearch Service links for SEO

Author: martijnvg

Vagrantfile

@@ -115,6 +115,11 @@ Vagrant.configure(2) do |config|
   'opensuse-42'.tap do |box|
     config.vm.define box, define_opts do |config|
       config.vm.box = 'elastic/opensuse-42-x86_64'
+
+      # https://github.com/elastic/elasticsearch/issues/30295
+      config.vm.provider 'virtualbox' do |vbox|
+        vbox.customize ['storagectl', :id, '--name', 'SATA Controller', '--hostiocache', 'on']
+      end
       suse_common config, box
     end
   end

buildSrc/src/main/groovy/org/elasticsearch/gradle/vagrant/VagrantTestPlugin.groovy

@@ -526,11 +526,7 @@ class VagrantTestPlugin implements Plugin<Project> {
                     project.gradle.removeListener(batsPackagingReproListener)
                 }
                 if (project.extensions.esvagrant.boxes.contains(box)) {
-                    // these tests are temporarily disabled for suse boxes while we debug an issue
-                    // https://github.com/elastic/elasticsearch/issues/30295
-                    if (box.equals("opensuse-42") == false && box.equals("sles-12") == false) {
-                        packagingTest.dependsOn(batsPackagingTest)
-                    }
+                    packagingTest.dependsOn(batsPackagingTest)
                 }
             }
 
@@ -569,11 +565,7 @@ class VagrantTestPlugin implements Plugin<Project> {
                 project.gradle.removeListener(javaPackagingReproListener)
             }
             if (project.extensions.esvagrant.boxes.contains(box)) {
-                // these tests are temporarily disabled for suse boxes while we debug an issue
-                // https://github.com/elastic/elasticsearch/issues/30295
-                if (box.equals("opensuse-42") == false && box.equals("sles-12") == false) {
-                    packagingTest.dependsOn(javaPackagingTest)
-                }
+                packagingTest.dependsOn(javaPackagingTest)
             }
 
             /*

docs/reference/getting-started.asciidoc

@@ -106,10 +106,11 @@ With that out of the way, let's get started with the fun part...
 
 [TIP]
 ==============
-You can skip installation completely by using our hosted
-Elasticsearch Service on https://www.elastic.co/cloud[Elastic Cloud], which is
-available on AWS and GCP. You can
-https://www.elastic.co/cloud/elasticsearch-service/signup[try out the hosted service] for free.
+You can skip having to install Elasticsearch by using our
+https://www.elastic.co/cloud/elasticsearch-service[hosted Elasticsearch Service]
+on Elastic Cloud. The Elasticsearch Service is available on both AWS and GCP.
+https://www.elastic.co/cloud/elasticsearch-service/signup[Try out the
+Elasticsearch Service for free].
 ==============
 
 Elasticsearch requires at least Java 8. Specifically as of this writing, it is recommended that you use the Oracle JDK version {jdk}. Java installation varies from platform to platform so we won't go into those details here. Oracle's recommended installation documentation can be found on http://docs.oracle.com/javase/8/docs/technotes/guides/install/install_overview.html[Oracle's website]. Suffice to say, before you install Elasticsearch, please check your Java version first by running (and then install/upgrade accordingly if needed):
@@ -1121,7 +1122,7 @@ In SQL, the above aggregation is similar in concept to:
 
 [source,sh]
 --------------------------------------------------
-SELECT state, COUNT(*) FROM bank GROUP BY state ORDER BY COUNT(*) DESC
+SELECT state, COUNT(*) FROM bank GROUP BY state ORDER BY COUNT(*) DESC LIMIT 10;
 --------------------------------------------------
 
 And the response (partially shown):

modules/lang-painless/src/main/java/org/elasticsearch/painless/AnalyzerCaster.java

@@ -19,8 +19,8 @@
 
 package org.elasticsearch.painless;
 
-import org.elasticsearch.painless.lookup.PainlessLookup;
 import org.elasticsearch.painless.lookup.PainlessCast;
+import org.elasticsearch.painless.lookup.PainlessLookupUtility;
 import org.elasticsearch.painless.lookup.def;
 
 import java.util.Objects;
@@ -465,8 +465,9 @@ public static PainlessCast getLegalCast(Location location, Class<?> actual, Clas
                 (actual.isAssignableFrom(expected) && explicit)) {
             return PainlessCast.standard(actual, expected, explicit);
         } else {
-            throw location.createError(new ClassCastException(
-                    "Cannot cast from [" + PainlessLookup.ClassToName(actual) + "] to [" + PainlessLookup.ClassToName(expected) + "]."));
+            throw location.createError(new ClassCastException("Cannot cast from " +
+                    "[" + PainlessLookupUtility.anyTypeToPainlessTypeName(actual) + "] to " +
+                    "[" + PainlessLookupUtility.anyTypeToPainlessTypeName(expected) + "]."));
         }
     }
 

modules/lang-painless/src/main/java/org/elasticsearch/painless/Def.java

@@ -19,9 +19,10 @@
 
 package org.elasticsearch.painless;
 
+import org.elasticsearch.painless.lookup.PainlessClass;
 import org.elasticsearch.painless.lookup.PainlessLookup;
+import org.elasticsearch.painless.lookup.PainlessLookupUtility;
 import org.elasticsearch.painless.lookup.PainlessMethod;
-import org.elasticsearch.painless.lookup.PainlessClass;
 import org.elasticsearch.painless.lookup.PainlessMethodKey;
 
 import java.lang.invoke.CallSite;
@@ -302,7 +303,7 @@ static MethodHandle lookupMethod(PainlessLookup painlessLookup, MethodHandles.Lo
                                                               nestedType,
                                                               0,
                                                               DefBootstrap.REFERENCE,
-                                                              PainlessLookup.ClassToName(interfaceType));
+                                                              PainlessLookupUtility.anyTypeToPainlessTypeName(interfaceType));
                      filter = nested.dynamicInvoker();
                  } else {
                      throw new AssertionError();
@@ -347,7 +348,7 @@ private static MethodHandle lookupReferenceInternal(PainlessLookup painlessLooku
              PainlessMethod interfaceMethod = painlessLookup.getPainlessStructFromJavaClass(clazz).functionalMethod;
              if (interfaceMethod == null) {
                  throw new IllegalArgumentException("Cannot convert function reference [" + type + "::" + call + "] " +
-                                                    "to [" + PainlessLookup.ClassToName(clazz) + "], not a functional interface");
+                         "to [" + PainlessLookupUtility.anyTypeToPainlessTypeName(clazz) + "], not a functional interface");
              }
              int arity = interfaceMethod.arguments.size() + captures.length;
              final MethodHandle handle;

modules/lang-painless/src/main/java/org/elasticsearch/painless/FunctionRef.java

@@ -21,6 +21,7 @@
 
 import org.elasticsearch.painless.lookup.PainlessClass;
 import org.elasticsearch.painless.lookup.PainlessLookup;
+import org.elasticsearch.painless.lookup.PainlessLookupUtility;
 import org.elasticsearch.painless.lookup.PainlessMethod;
 import org.elasticsearch.painless.lookup.PainlessMethodKey;
 import org.objectweb.asm.Type;
@@ -168,7 +169,7 @@ private static PainlessMethod lookup(PainlessLookup painlessLookup, Class<?> exp
         PainlessMethod method = painlessLookup.getPainlessStructFromJavaClass(expected).functionalMethod;
         if (method == null) {
             throw new IllegalArgumentException("Cannot convert function reference [" + type + "::" + call + "] " +
-                                               "to [" + PainlessLookup.ClassToName(expected) + "], not a functional interface");
+                    "to [" + PainlessLookupUtility.anyTypeToPainlessTypeName(expected) + "], not a functional interface");
         }
 
         // lookup requested method

modules/lang-painless/src/main/java/org/elasticsearch/painless/Locals.java

@@ -19,10 +19,11 @@
 
 package org.elasticsearch.painless;
 
+import org.elasticsearch.painless.ScriptClassInfo.MethodArgument;
 import org.elasticsearch.painless.lookup.PainlessLookup;
+import org.elasticsearch.painless.lookup.PainlessLookupUtility;
 import org.elasticsearch.painless.lookup.PainlessMethod;
 import org.elasticsearch.painless.lookup.PainlessMethodKey;
-import org.elasticsearch.painless.ScriptClassInfo.MethodArgument;
 
 import java.util.Arrays;
 import java.util.Collection;
@@ -292,7 +293,7 @@ public int getSlot() {
         @Override
         public String toString() {
             StringBuilder b = new StringBuilder();
-            b.append("Variable[type=").append(PainlessLookup.ClassToName(clazz));
+            b.append("Variable[type=").append(PainlessLookupUtility.anyTypeToPainlessTypeName(clazz));
             b.append(",name=").append(name);
             b.append(",slot=").append(slot);
             if (readonly) {

modules/lang-painless/src/main/java/org/elasticsearch/painless/ScriptClassInfo.java

@@ -20,6 +20,7 @@
 package org.elasticsearch.painless;
 
 import org.elasticsearch.painless.lookup.PainlessLookup;
+import org.elasticsearch.painless.lookup.PainlessLookupUtility;
 
 import java.lang.invoke.MethodType;
 import java.lang.reflect.Field;
@@ -182,7 +183,7 @@ private MethodArgument methodArgument(PainlessLookup painlessLookup, Class<?> cl
 
     private static Class<?> definitionTypeForClass(PainlessLookup painlessLookup, Class<?> type,
                                                    Function<Class<?>, String> unknownErrorMessageSource) {
-        type = PainlessLookup.ObjectClassTodefClass(type);
+        type = PainlessLookupUtility.javaObjectTypeToPainlessDefType(type);
         Class<?> componentType = type;
 
         while (componentType.isArray()) {

modules/lang-painless/src/main/java/org/elasticsearch/painless/antlr/EnhancedPainlessLexer.java

@@ -23,8 +23,8 @@
 import org.antlr.v4.runtime.LexerNoViableAltException;
 import org.antlr.v4.runtime.Token;
 import org.antlr.v4.runtime.misc.Interval;
-import org.elasticsearch.painless.lookup.PainlessLookup;
 import org.elasticsearch.painless.Location;
+import org.elasticsearch.painless.lookup.PainlessLookup;
 
 /**
  * A lexer that is customized for painless. It: