Merge branch 'introduce-analyze-thread-pool' into remove-index-thread-pool

* introduce-analyze-thread-pool:
  Introduce analyze thread pool

Author: jasontedor

docs/reference/cat/thread_pool.asciidoc

@@ -14,6 +14,7 @@ Which looks like:
 
 [source,txt]
 --------------------------------------------------
+node-0 analyze             0 0 0
 node-0 bulk                0 0 0
 node-0 fetch_shard_started 0 0 0
 node-0 fetch_shard_store   0 0 0
@@ -43,6 +44,7 @@ The second column is the thread pool name
 [source,txt]
 --------------------------------------------------
 name
+analyze
 bulk
 fetch_shard_started
 fetch_shard_store

docs/reference/modules/threadpool.asciidoc

@@ -30,6 +30,9 @@ There are several thread pools, but the important ones include:
     with a size of `# of available processors`,
     queue_size of `1000`.
 
+`analyze`::
+    For analyze requests. Thread pool type is `fixed` with a size of 1, queue size of 16.
+
 `bulk`::
     For bulk operations. Thread pool type is `fixed`
     with a size of `# of available processors`,

server/src/main/java/org/elasticsearch/action/admin/indices/analyze/TransportAnalyzeAction.java

@@ -85,7 +85,7 @@ public class TransportAnalyzeAction extends TransportSingleShardAction<AnalyzeRe
     public TransportAnalyzeAction(Settings settings, ThreadPool threadPool, ClusterService clusterService, TransportService transportService,
                                   IndicesService indicesService, ActionFilters actionFilters,
                                   IndexNameExpressionResolver indexNameExpressionResolver, Environment environment) {
-        super(settings, AnalyzeAction.NAME, threadPool, clusterService, transportService, actionFilters, indexNameExpressionResolver, AnalyzeRequest::new, ThreadPool.Names.INDEX);
+        super(settings, AnalyzeAction.NAME, threadPool, clusterService, transportService, actionFilters, indexNameExpressionResolver, AnalyzeRequest::new, ThreadPool.Names.ANALYZE);
         this.indicesService = indicesService;
         this.environment = environment;
     }

server/src/main/java/org/elasticsearch/threadpool/ThreadPool.java

@@ -68,6 +68,7 @@ public static class Names {
         public static final String GENERIC = "generic";
         public static final String LISTENER = "listener";
         public static final String GET = "get";
+        public static final String ANALYZE = "analyze";
         public static final String INDEX = "index";
         public static final String BULK = "bulk";
         public static final String SEARCH = "search";
@@ -173,6 +174,7 @@ public ThreadPool(final Settings settings, final ExecutorBuilder<?>... customBui
         builders.put(Names.INDEX, new FixedExecutorBuilder(settings, Names.INDEX, availableProcessors, 200, true));
         builders.put(Names.BULK, new FixedExecutorBuilder(settings, Names.BULK, availableProcessors, 200)); // now that we reuse bulk for index/delete ops
         builders.put(Names.GET, new FixedExecutorBuilder(settings, Names.GET, availableProcessors, 1000));
+        builders.put(Names.ANALYZE, new FixedExecutorBuilder(settings, Names.ANALYZE, 1, 16));
         builders.put(Names.SEARCH, new AutoQueueAdjustingExecutorBuilder(settings,
                         Names.SEARCH, searchThreadPoolSize(availableProcessors), 1000, 1000, 1000, 2000));
         builders.put(Names.MANAGEMENT, new ScalingExecutorBuilder(Names.MANAGEMENT, 1, 5, TimeValue.timeValueMinutes(5)));