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From "Owen O'Malley (JIRA)" <j...@apache.org>
Subject [jira] Updated: (HADOOP-128) Failure to replicate dfs block kills client
Date Thu, 13 Apr 2006 17:17:01 GMT
     [ http://issues.apache.org/jira/browse/HADOOP-128?page=all ]

Owen O'Malley updated HADOOP-128:
---------------------------------

    Attachment: datanode.no-ws-diff

These are the diffs to DataNode.java ignoring whitespaces.

> Failure to replicate dfs block kills client
> -------------------------------------------
>
>          Key: HADOOP-128
>          URL: http://issues.apache.org/jira/browse/HADOOP-128
>      Project: Hadoop
>         Type: Bug

>   Components: dfs
>     Versions: 0.1.1
>  Environment: ~200 node linux cluster (kernel 2.6, redhat, 2 hyper threaded cpus)
>     Reporter: Owen O'Malley
>     Assignee: Owen O'Malley
>  Attachments: datanode-mirroring.patch, datanode.no-ws-diff
>
> When the datanode gets an exception, which is logged as:
> 060407 155835 13 DataXCeiver
> java.io.EOFException
>         at java.io.DataInputStream.readFully(DataInputStream.java:178)
>         at java.io.DataInputStream.readLong(DataInputStream.java:380)
>         at org.apache.hadoop.dfs.DataNode$DataXceiver.run(DataNode.java:462)
>         at java.lang.Thread.run(Thread.java:595)
> It closes the user's connection to the data node, which causes the client to get an IOException
from:
>         at java.io.DataInputStream.readFully(DataInputStream.java:178)
>         at java.io.DataInputStream.readLong(DataInputStream.java:380)
>         at org.apache.hadoop.dfs.DFSClient$DFSOutputStream.internalClose(DFSClient.java:883)
>  

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