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From "Harsh J (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-79) Uncaught Exception in DataTransfer.run
Date Sat, 19 Nov 2011 20:00:52 GMT

    [ https://issues.apache.org/jira/browse/HDFS-79?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13153570#comment-13153570
] 

Harsh J commented on HDFS-79:
-----------------------------

This would be a RuntimeException -> IllegalStateException derivative. The docs say that
this exception is unchecked.

I wonder if we see it anymore though?

We could intercept it, but not sure if the behavior is alright this way already.
                
> Uncaught Exception in DataTransfer.run
> --------------------------------------
>
>                 Key: HDFS-79
>                 URL: https://issues.apache.org/jira/browse/HDFS-79
>             Project: Hadoop HDFS
>          Issue Type: Bug
>         Environment: 17.0 + H1979-H2159-H3442
>            Reporter: Koji Noguchi
>            Priority: Minor
>
> Minor, but it would be nice if this exception is caught and logged.
> I see in .out file of datanode, 
> {noformat}
> Exception in thread "org.apache.hadoop.dfs.DataNode$DataTransfer@9d2805" java.nio.channels.ClosedSelectorException
>         at sun.nio.ch.SelectorImpl.lockAndDoSelect(SelectorImpl.java:66)
>         at sun.nio.ch.SelectorImpl.selectNow(SelectorImpl.java:88)
>         at sun.nio.ch.Util.releaseTemporarySelector(Util.java:135)
>         at sun.nio.ch.SocketAdaptor.connect(SocketAdaptor.java:118)
>         at org.apache.hadoop.dfs.DataNode$DataTransfer.run(DataNode.java:2604)
>         at java.lang.Thread.run(Thread.java:619)
> {noformat}

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