17:54:34,026 WARN [New I/O server worker #1-4] - [DUBBO] Thread pool is EXHAUSTED! Thread Name: DubboServerHandler-10.8.64.57:20880, Pool Size: 300 (active: 300, core: 300, max: 300, largest: 300), Task: 5821 (completed: 5621), Executor status:(isShutdown:false, isTerminated:false, isTerminating:false), in dubbo://x.x.x.x:20880!, dubbo version: 2.6.5, current host: x.x.x.x com.alibaba.dubbo.remoting.ExecutionException: class com.alibaba.dubbo.remoting.transport.dispatcher.all.AllChannelHandler error when process caught event . at com.alibaba.dubbo.remoting.transport.dispatcher.all.AllChannelHandler.caught(AllChannelHandler.java:67) at com.alibaba.dubbo.remoting.transport.AbstractChannelHandlerDelegate.caught(AbstractChannelHandlerDelegate.java:44) at com.alibaba.dubbo.remoting.transport.AbstractChannelHandlerDelegate.caught(AbstractChannelHandlerDelegate.java:44) at com.alibaba.dubbo.remoting.transport.AbstractPeer.caught(AbstractPeer.java:127) at com.alibaba.dubbo.remoting.transport.netty.NettyHandler.exceptionCaught(NettyHandler.java:112) at com.alibaba.dubbo.remoting.transport.netty.NettyCodecAdapter$InternalDecoder.exceptionCaught(NettyCodecAdapter.java:165) at org.jboss.netty.channel.Channels.fireExceptionCaught(Channels.java:432) at org.jboss.netty.channel.AbstractChannelSink.exceptionCaught(AbstractChannelSink.java:52) at org.jboss.netty.channel.Channels.fireMessageReceived(Channels.java:302) at com.alibaba.dubbo.remoting.transport.netty.NettyCodecAdapter$InternalDecoder.messageReceived(NettyCodecAdapter.java:148) at org.jboss.netty.channel.Channels.fireMessageReceived(Channels.java:274) at org.jboss.netty.channel.Channels.fireMessageReceived(Channels.java:261) at org.jboss.netty.channel.socket.nio.NioWorker.read(NioWorker.java:350) at org.jboss.netty.channel.socket.nio.NioWorker.processSelectedKeys(NioWorker.java:281) at org.jboss.netty.channel.socket.nio.NioWorker.run(NioWorker.java:201) at org.jboss.netty.util.internal.IoWorkerRunnable.run(IoWorkerRunnable.java:46) at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908) at java.lang.Thread.run(Thread.java:619) Caused by: java.util.concurrent.RejectedExecutionException: Thread pool is EXHAUSTED! Thread Name: DubboServerHandler-10.8.64.57:20880, Pool Size: 300 (active: 300, core: 300, max: 300, largest: 300), Task: 5821