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From Xi Shen <davidshe...@gmail.com>
Subject How to troubleshoot server.TransportChannelHandler Exception
Date Thu, 26 Mar 2015 05:28:26 GMT
Hi,

My environment is Windows 64bit, Spark + YARN. I had a job that takes a
long time. It starts well, but it ended with below exception:

15/03/25 12:39:09 WARN server.TransportChannelHandler: Exception in
connection from
headnode0.xshe3539-hadoop-sydney.q10.internal.cloudapp.net/100.72.68.34:58507
java.io.IOException: An existing connection was forcibly closed by the
remote host
at sun.nio.ch.SocketDispatcher.read0(Native Method)
at sun.nio.ch.SocketDispatcher.read(SocketDispatcher.java:43)
at sun.nio.ch.IOUtil.readIntoNativeBuffer(IOUtil.java:223)
at sun.nio.ch.IOUtil.read(IOUtil.java:192)
at sun.nio.ch.SocketChannelImpl.read(SocketChannelImpl.java:379)
at
io.netty.buffer.PooledUnsafeDirectByteBuf.setBytes(PooledUnsafeDirectByteBuf.java:311)
at io.netty.buffer.AbstractByteBuf.writeBytes(AbstractByteBuf.java:881)
at
io.netty.channel.socket.nio.NioSocketChannel.doReadBytes(NioSocketChannel.java:225)
at
io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:119)
at
io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:511)
at
io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:468)
at
io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:382)
at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:354)
at
io.netty.util.concurrent.SingleThreadEventExecutor$2.run(SingleThreadEventExecutor.java:116)
at java.lang.Thread.run(Thread.java:745)
15/03/25 12:39:09 ERROR executor.CoarseGrainedExecutorBackend: Driver
Disassociated [akka.tcp://
sparkExecutor@workernode0.xshe3539-hadoop-sydney.q10.internal.cloudapp.net:65469]
-> [akka.tcp://
sparkDriver@headnode0.xshe3539-hadoop-sydney.q10.internal.cloudapp.net:58467]
disassociated! Shutting down.
15/03/25 12:39:09 WARN remote.ReliableDeliverySupervisor: Association with
remote system [akka.tcp://
sparkDriver@headnode0.xshe3539-hadoop-sydney.q10.internal.cloudapp.net:58467]
has failed, address is now gated for [5000] ms. Reason is: [Disassociated].

Interestingly, the job is shown as Succeeded in the RM. I checked the
application log, it is miles long, and this is the only exception I found.
And it is no very useful to help me pin point the problem.

Any idea what would be the cause?


Thanks,


[image: --]
Xi Shen
[image: http://]about.me/davidshen
<http://about.me/davidshen?promo=email_sig>
  <http://about.me/davidshen>

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