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From rammohan ganapavarapu <rammohanga...@gmail.com>
Subject Re: Datanode: DataXceiver error processing unknown operation
Date Mon, 13 Jun 2016 22:57:32 GMT
Thank you!
On Jun 13, 2016 3:23 PM, "Chris Nauroth" <cnauroth@hortonworks.com> wrote:

> Hello Ram,
>
> This indicates that a client connected to the DataNode's data transfer
> port but then immediately disconnected before requesting an operation.
> Sometimes monitoring tools will do this as a liveness check to make sure
> the DataNode process is running and the port is reachable.  The log message
> is harmless.  Apache Hadoop 2.8.0 will ship fix HDFS-9572 to prevent this
> message from going into the logs.
>
> <https://issues.apache.org/jira/browse/HDFS-9572>
> <https://issues.apache.org/jira/browse/HDFS-9572>
> https://issues.apache.org/jira/browse/HDFS-9572
>
> --Chris Nauroth
>
> From: rammohan ganapavarapu <rammohanganap@gmail.com>
> Date: Monday, June 13, 2016 at 2:02 PM
> To: "user@hadoop.apache.org" <user@hadoop.apache.org>
> Subject: Datanode: DataXceiver error processing unknown operation
>
> Hi,
>
> I am getting this error in datanode, not sure what it means and how to fix
> it, any one have any suggestions?
>
>
> 2016-06-13 20:59:40,148 ERROR
> org.apache.hadoop.hdfs.server.datanode.DataNode:
> localhost:50010:DataXceiver error processing unknown operation  src: /
> 1.2.3.4:57308 dst: /1.2.3.4:50010
> java.io.EOFException
>
> Thanks,
> Ram
>

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