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From "Runping Qi (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-2042) distcp job failed
Date Fri, 12 Oct 2007 20:51:51 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-2042?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12534401
] 

Runping Qi commented on HADOOP-2042:
------------------------------------

The current trunk. I guess it is 0.15


> distcp job failed
> -----------------
>
>                 Key: HADOOP-2042
>                 URL: https://issues.apache.org/jira/browse/HADOOP-2042
>             Project: Hadoop
>          Issue Type: Bug
>          Components: dfs
>    Affects Versions: 0.15.0
>            Reporter: Runping Qi
>
> I was running distcp to copy data from one dfs to another.
> The job failed with the following exception in the mappers:
> java.net.SocketException: Connection reset
> 	at java.net.SocketOutputStream.socketWrite(SocketOutputStream.java:96)
> 	at java.net.SocketOutputStream.write(SocketOutputStream.java:136)
> 	at java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:65)
> 	at java.io.BufferedOutputStream.write(BufferedOutputStream.java:109)
> 	at java.io.DataOutputStream.write(DataOutputStream.java:90)
> 	at org.apache.hadoop.dfs.DFSClient$DFSOutputStream.endBlock(DFSClient.java:1633)
> 	at org.apache.hadoop.dfs.DFSClient$DFSOutputStream.close(DFSClient.java:1720)
> 	at org.apache.hadoop.fs.FSDataOutputStream$PositionCache.close(FSDataOutputStream.java:49)
> 	at org.apache.hadoop.fs.FSDataOutputStream.close(FSDataOutputStream.java:64)
> 	at org.apache.hadoop.util.CopyFiles$FSCopyFilesMapper.copy(CopyFiles.java:305)
> 	at org.apache.hadoop.util.CopyFiles$FSCopyFilesMapper.map(CopyFiles.java:352)
> 	at org.apache.hadoop.util.CopyFiles$FSCopyFilesMapper.map(CopyFiles.java:217)
> 	at org.apache.hadoop.mapred.MapRunner.run(MapRunner.java:50)
> 	at org.apache.hadoop.mapred.MapTask.run(MapTask.java:195)
> 	at org.apache.hadoop.mapred.TaskTracker$Child.main(TaskTracker.java:1750)
> I examined the data node logs of the target dfs. I saw a lot of exceptions like:
> 2007-10-12 15:04:09,109 ERROR org.apache.hadoop.dfs.DataNode: DataXceiver: java.io.EOFException
>         at java.io.DataInputStream.readInt(DataInputStream.java:375)
>         at org.apache.hadoop.dfs.DataNode$BlockReceiver.receiveBlock(DataNode.java:1365)
>         at org.apache.hadoop.dfs.DataNode$DataXceiver.writeBlock(DataNode.java:897)
>         at org.apache.hadoop.dfs.DataNode$DataXceiver.run(DataNode.java:763)
>         at java.lang.Thread.run(Thread.java:619)

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