Dubbo错误排查：com.alibaba.dubbo.rpc.RpcException: Invoke remote method timeout

一、错误信息

客户端错误：

com.alibaba.dubbo.rpc.RpcException: Invoke remote method timeout. method: searchUser, provider: ...cause: Waiting server-side response timeout by scan timer. start time: 2015-06-17 14:46:49.979, end time: 2015-06-17 14:46:51.002, client elapsed: 44 ms, server elapsed: 959 ms, timeout: 1000 ms, request: Request...

服务端警告：

2015-06-17 14:46:52,454 WARN [DubboServerHandler-172.25.6.248:20882-thread-2] (ChannelEventRunnable.java:84) - [DUBBO] ChannelEventRunnable handle RECEIVED operation errorcom.alibaba.dubbo.remoting.RemotingException: Failed to send message Response [id=0, version=2.0.0, status=20, event=false, error=null, result=RpcResult [result=com.ceair.cesso.dto.SearchUserResult@7ba2a1d2, exception=null]] to /172.25.3.91:50849, cause: nullat com.alibaba.dubbo.remoting.transport.netty.NettyChannel.send(NettyChannel.java:108)at com.alibaba.dubbo.remoting.transport.AbstractPeer.send(AbstractPeer.java:51)at com.alibaba.dubbo.remoting.exchange.support.header.HeaderExchangeHandler.received(HeaderExchangeHandler.java:171)at com.alibaba.dubbo.remoting.transport.DecodeHandler.received(DecodeHandler.java:52)at com.alibaba.dubbo.remoting.transport.dispatcher.ChannelEventRunnable.run(ChannelEventRunnable.java:82)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:662) Caused by: java.nio.channels.ClosedChannelExceptionat org.jboss.netty.channel.socket.nio.NioWorker.cleanUpWriteBuffer(NioWorker.java:643)at org.jboss.netty.channel.socket.nio.NioWorker.writeFromUserCode(NioWorker.java:370)at org.jboss.netty.channel.socket.nio.NioServerSocketPipelineSink.handleAcceptedSocket(NioServerSocketPipelineSink.java:137)at org.jboss.netty.channel.socket.nio.NioServerSocketPipelineSink.eventSunk(NioServerSocketPipelineSink.java:76)at org.jboss.netty.channel.Channels.write(Channels.java:632)at org.jboss.netty.handler.codec.oneone.OneToOneEncoder.handleDownstream(OneToOneEncoder.java:70)at com.alibaba.dubbo.remoting.transport.netty.NettyHandler.writeRequested(NettyHandler.java:99)at org.jboss.netty.channel.Channels.write(Channels.java:611)at org.jboss.netty.channel.Channels.write(Channels.java:578)at org.jboss.netty.channel.AbstractChannel.write(AbstractChannel.java:251)at com.alibaba.dubbo.remoting.transport.netty.NettyChannel.send(NettyChannel.java:98)... 7 more

二、原因分析

客户端日志可以看到是超时错误。

接着给出信息：客户端、服务端花费的时间；

在看服务端，是通道被关闭，无法发送信息。

整体看起来，就是超时了，客户端没有得到返回信息，服务端不能发送信息。

是超时的配置

检查客户端、服务端的超时配置；发现客户端的超时时间没有设置，设置为一个较长时间，就可以了。

超时设置方法：Dubbo超时设置方法

总结

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