I get this error while running controller.

2014-05-15 00:05:06.560 PDT [Thread-27] INFO o.o.o.protocol.impl.core.TcpHandler - Switch listener started and ready to accept incoming connections on port: 6633

2014-05-15 00:05:06.928 PDT [nettyThreadgroupModule$NioEventLoopGroupCloseable-6
-1] ERROR io.netty.util.ResourceLeakDetector - LEAK: ByteBuf.release() was not
called before it's garbage-collected. Enable advanced leak reporting to find out
where the leak occurred. To enable advanced leak reporting, specify the JVM
option '-Dio.netty.leakDetectionLevel=advanced' or call ResourceLeakDetector.setLevel()