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