java.lang.ClassCastException: com.weibo.api.motan.transport.netty4.NettyMessage cannot be cast to com.weibo.api.motan.rpc.Request

[fallsea]

压力测试的时候，隔段时间出现下面异常，使用版本是1.1.8

2020-08-29 20:30:33.656 ERROR 12091 --- [nioEventLoopGroup-3-13] error                                    : NettyChannelHandler exceptionCaught: remote=/172.16.85.169:58190 local=/172.16.85.169:10301 event=com.weibo.api.motan.transport.netty4.NettyMessage cannot be cast to com.weibo.api.motan.rpc.Request

java.lang.ClassCastException: com.weibo.api.motan.transport.netty4.NettyMessage cannot be cast to com.weibo.api.motan.rpc.Request
    at com.weibo.api.motan.transport.netty4.NettyChannelHandler.rejectMessage(NettyChannelHandler.java:97) ~[motan-transport-netty4-1.1.8.jar!/:na]
    at com.weibo.api.motan.transport.netty4.NettyChannelHandler.channelRead(NettyChannelHandler.java:78) ~[motan-transport-netty4-1.1.8.jar!/:na]
    at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379) [netty-all-4.1.51.Final.jar!/:4.1.51.Final]
    at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365) [netty-all-4.1.51.Final.jar!/:4.1.51.Final]
    at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:357) [netty-all-4.1.51.Final.jar!/:4.1.51.Final]
    at io.netty.handler.codec.ByteToMessageDecoder.fireChannelRead(ByteToMessageDecoder.java:324) [netty-all-4.1.51.Final.jar!/:4.1.51.Final]
    at io.netty.handler.codec.ByteToMessageDecoder.fireChannelRead(ByteToMessageDecoder.java:311) [netty-all-4.1.51.Final.jar!/:4.1.51.Final]
    at io.netty.handler.codec.ByteToMessageDecoder.callDecode(ByteToMessageDecoder.java:425) [netty-all-4.1.51.Final.jar!/:4.1.51.Final]
    at io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:276) [netty-all-4.1.51.Final.jar!/:4.1.51.Final]
    at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379) [netty-all-4.1.51.Final.jar!/:4.1.51.Final]
    at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365) [netty-all-4.1.51.Final.jar!/:4.1.51.Final]
    at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:357) [netty-all-4.1.51.Final.jar!/:4.1.51.Final]
    at io.netty.channel.DefaultChannelPipeline$HeadContext.channelRead(DefaultChannelPipeline.java:1410) [netty-all-4.1.51.Final.jar!/:4.1.51.Final]
    at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379) [netty-all-4.1.51.Final.jar!/:4.1.51.Final]
    at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365) [netty-all-4.1.51.Final.jar!/:4.1.51.Final]
    at io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:919) [netty-all-4.1.51.Final.jar!/:4.1.51.Final]
    at io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:163) [netty-all-4.1.51.Final.jar!/:4.1.51.Final]
    at io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:714) [netty-all-4.1.51.Final.jar!/:4.1.51.Final]
    at io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:650) [netty-all-4.1.51.Final.jar!/:4.1.51.Final]
    at io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:576) [netty-all-4.1.51.Final.jar!/:4.1.51.Final]
    at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:493) [netty-all-4.1.51.Final.jar!/:4.1.51.Final]
    at io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:989) [netty-all-4.1.51.Final.jar!/:4.1.51.Final]
    at io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74) [netty-all-4.1.51.Final.jar!/:4.1.51.Final]
    at io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30) [netty-all-4.1.51.Final.jar!/:4.1.51.Final]
    at java.lang.Thread.run(Thread.java:748) [na:1.8.0_262]

[rayzhang0603]

感谢反馈，异常的原因是异步处理消息线程池满时，消息还未进行decode，类型转换错误。将在下个release版本fix

[rayzhang0603]

已fix https://github.com/weibocom/motan/pull/918