Avoid to run Beats parser and Beats protocol handler in separate executors group (beatsHandlerExecutorGroup)

Author: andsel

src/main/java/org/logstash/beats/Server.java

@@ -112,7 +112,6 @@ private class BeatsInitializer extends ChannelInitializer<SocketChannel> {
         private final int IDLESTATE_WRITER_IDLE_TIME_SECONDS = 5;
 
         private final EventExecutorGroup idleExecutorGroup;
-        private final EventExecutorGroup beatsHandlerExecutorGroup;
         private final IMessageListener localMessageListener;
         private final int localClientInactivityTimeoutSeconds;
 
@@ -121,7 +120,6 @@ private class BeatsInitializer extends ChannelInitializer<SocketChannel> {
             this.localMessageListener = messageListener;
             this.localClientInactivityTimeoutSeconds = clientInactivityTimeoutSeconds;
             idleExecutorGroup = new DefaultEventExecutorGroup(DEFAULT_IDLESTATEHANDLER_THREAD);
-            beatsHandlerExecutorGroup = new DefaultEventExecutorGroup(beatsHandlerThread);
         }
 
         public void initChannel(SocketChannel socket){
@@ -134,7 +132,8 @@ public void initChannel(SocketChannel socket){
                              new IdleStateHandler(localClientInactivityTimeoutSeconds, IDLESTATE_WRITER_IDLE_TIME_SECONDS, localClientInactivityTimeoutSeconds));
             pipeline.addLast(BEATS_ACKER, new AckEncoder());
             pipeline.addLast(CONNECTION_HANDLER, new ConnectionHandler());
-            pipeline.addLast(beatsHandlerExecutorGroup, new BeatsParser(), new BeatsHandler(localMessageListener));
+            pipeline.addLast(new BeatsParser());
+            pipeline.addLast(new BeatsHandler(localMessageListener));
         }
 
 
@@ -152,7 +151,6 @@ public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) throws E
         public void shutdownEventExecutor() {
             try {
                 idleExecutorGroup.shutdownGracefully().sync();
-                beatsHandlerExecutorGroup.shutdownGracefully().sync();
             } catch (InterruptedException e) {
                 throw new IllegalStateException(e);
             }