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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-3998) Got an exception from ClientFinalizer when the JT is terminated
Date Tue, 10 Mar 2009 00:14:50 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-3998?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12680333#action_12680333
] 

Hadoop QA commented on HADOOP-3998:
-----------------------------------

+1 overall.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12401658/closeAll3.patch
  against trunk revision 751823.

    +1 @author.  The patch does not contain any @author tags.

    +1 tests included.  The patch appears to include 3 new or modified tests.

    +1 javadoc.  The javadoc tool did not generate any warning messages.

    +1 javac.  The applied patch does not increase the total number of javac compiler warnings.

    +1 findbugs.  The patch does not introduce any new Findbugs warnings.

    +1 Eclipse classpath. The patch retains Eclipse classpath integrity.

    +1 release audit.  The applied patch does not increase the total number of release audit
warnings.

    +1 core tests.  The patch passed core unit tests.

    +1 contrib tests.  The patch passed contrib unit tests.

Test results: http://hudson.zones.apache.org/hudson/job/Hadoop-Patch-vesta.apache.org/59/testReport/
Findbugs warnings: http://hudson.zones.apache.org/hudson/job/Hadoop-Patch-vesta.apache.org/59/artifact/trunk/build/test/findbugs/newPatchFindbugsWarnings.html
Checkstyle results: http://hudson.zones.apache.org/hudson/job/Hadoop-Patch-vesta.apache.org/59/artifact/trunk/build/test/checkstyle-errors.html
Console output: http://hudson.zones.apache.org/hudson/job/Hadoop-Patch-vesta.apache.org/59/console

This message is automatically generated.

> Got an exception from ClientFinalizer when the JT is terminated
> ---------------------------------------------------------------
>
>                 Key: HADOOP-3998
>                 URL: https://issues.apache.org/jira/browse/HADOOP-3998
>             Project: Hadoop Core
>          Issue Type: Bug
>          Components: dfs
>    Affects Versions: 0.19.0
>            Reporter: Amar Kamat
>            Assignee: dhruba borthakur
>            Priority: Blocker
>             Fix For: 0.18.4, 0.19.2, 0.20.0
>
>         Attachments: closeAll.patch, closeAll.patch, closeAll.patch, closeAll2.patch,
closeAll3.patch
>
>
> This happens when we terminate the JT using _control-C_. It throws the following exception
> {noformat}
> Exception closing file my-file
> java.io.IOException: Filesystem closed
>         at org.apache.hadoop.hdfs.DFSClient.checkOpen(DFSClient.java:193)
>         at org.apache.hadoop.hdfs.DFSClient.access$700(DFSClient.java:64)
>         at org.apache.hadoop.hdfs.DFSClient$DFSOutputStream.closeInternal(DFSClient.java:2868)
>         at org.apache.hadoop.hdfs.DFSClient$DFSOutputStream.close(DFSClient.java:2837)
>         at org.apache.hadoop.hdfs.DFSClient$LeaseChecker.close(DFSClient.java:808)
>         at org.apache.hadoop.hdfs.DFSClient.close(DFSClient.java:205)
>         at org.apache.hadoop.hdfs.DistributedFileSystem.close(DistributedFileSystem.java:253)
>         at org.apache.hadoop.fs.FileSystem$Cache.closeAll(FileSystem.java:1367)
>         at org.apache.hadoop.fs.FileSystem.closeAll(FileSystem.java:234)
>         at org.apache.hadoop.fs.FileSystem$ClientFinalizer.run(FileSystem.java:219)
> {noformat}
> Note that _my-file_ is some file used by the JT.
> Also if there is some file renaming done, then the exception states that the earlier
file does not exist. I am not sure if this is a MR issue or a DFS issue. Opening this issue
for investigation.

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