wordhardqi commented on issue #5230:
URL:
https://github.com/apache/dolphinscheduler/issues/5230#issuecomment-868672703
I installed 4 workers on 4 machine. I also got this error
```
[ERROR] 2021-06-26 00:04:10.332
org.apache.dolphinscheduler.remote.handler.NettyServerHandler:[152] -
exceptionCaught : java.lang.IllegalArgumentException: illegal packet [magic]-1
io.netty.handler.codec.DecoderException: java.lang.IllegalArgumentException:
illegal packet [magic]-1
at
io.netty.handler.codec.ReplayingDecoder.callDecode(ReplayingDecoder.java:421)
at
io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:276)
at
io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379)
at
io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365)
at
io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:357)
at
io.netty.channel.DefaultChannelPipeline$HeadContext.channelRead(DefaultChannelPipeline.java:1410)
at
io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379)
at
io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365)
at
io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:919)
at
io.netty.channel.epoll.AbstractEpollStreamChannel$EpollStreamUnsafe.epollInReady(AbstractEpollStreamChannel.java:795)
at
io.netty.channel.epoll.EpollEventLoop.processReady(EpollEventLoop.java:475)
at io.netty.channel.epoll.EpollEventLoop.run(EpollEventLoop.java:378)
at
io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:989)
at
io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74)
at java.lang.Thread.run(Thread.java:748)
Caused by: java.lang.IllegalArgumentException: illegal packet [magic]-1
at
org.apache.dolphinscheduler.remote.codec.NettyDecoder.checkMagic(NettyDecoder.java:125)
at
org.apache.dolphinscheduler.remote.codec.NettyDecoder.decode(NettyDecoder.java:57)
at
io.netty.handler.codec.ByteToMessageDecoder.decodeRemovalReentryProtection(ByteToMessageDecoder.java:501)
at
io.netty.handler.codec.ReplayingDecoder.callDecode(ReplayingDecoder.java:366)
... 14 common frames omitted
```
Every worker machine's log has this log.
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