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From Arthur Caranta <art...@caranta.com>
Subject Re: Datanode Registration DataXceiver java.io.EOFException
Date Mon, 04 Oct 2010 13:30:42 GMT
 Damn I found the answer to this problem, thanks to someone on the
#hadoop IRC channel ...

It was a network check I added for our supervision ... therefore every 5
minutes the supervision connects to the datanode port to check if it is
alive and then disconnects ...

Sorry for the dumb problem ........

On 04/10/10 15:06, Arthur Caranta wrote:
>  Hi everyone.
>
> This is my first post on this mailing list and I hope I won't do any
> mistakes ;)
>
> I work for a French telecom operator ad we have recently started a
> Hadoop project.
>
> We currently have two clusters:
> -a preproduction cluster running with 1 master plus 4 nodes
> -a production cluster running with 1 master plus 24 nodes
>
> Both clusters are running Hadoop 0.20.2 and the jobs are running smoothly.
>
> However, on every datanodes of each cluster I receive, every 5 minutes,
> I see this error :
> 2010-10-04 14:31:46,564 ERROR
> org.apache.hadoop.hdfs.server.datanode.DataNode:
> DatanodeRegistration(xx.xx.xx.xx:50010,
> storageID=DS-1295517999-xx.xx.xx.xx-50010-1280483437127, infoPort=50075,
> ipcPort=50020):DataXceiver
> java.io.EOFException
>     at java.io.DataInputStream.readShort(DataInputStream.java:298)
>     at
> org.apache.hadoop.hdfs.server.datanode.DataXceiver.run(DataXceiver.java:79)
>     at java.lang.Thread.run(Thread.java:619)
>
> 2010-10-04 14:36:46,804 ERROR
> org.apache.hadoop.hdfs.server.datanode.DataNode:
> DatanodeRegistration(xx.xx.xx.xx:50010,
> storageID=DS-1295517999-xx.xx.xx.xx-50010-1280483437127, infoPort=50075,
> ipcPort=50020):DataXceiver
> java.io.EOFException
>     at java.io.DataInputStream.readShort(DataInputStream.java:298)
>     at
> org.apache.hadoop.hdfs.server.datanode.DataXceiver.run(DataXceiver.java:79)
>     at java.lang.Thread.run(Thread.java:619)
>
>
> And I can't find anything on the web ...
>
> Anyone has a clue ?
>
> Best Regards,
>


-- 
------------------------------
Arthur CARANTA
arthur@caranta.com
http://www.caranta.com
------------------------------ 



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