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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-1981) When namenode goes down while checkpointing and if is started again subsequent Checkpointing is always failing
Date Wed, 27 Jul 2011 12:47:09 GMT

    [ https://issues.apache.org/jira/browse/HDFS-1981?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13071692#comment-13071692

Hadoop QA commented on HDFS-1981:

-1 overall.  Here are the results of testing the latest attachment 
  against trunk revision 1151344.

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

    +1 tests included.  The patch appears to include 4 new or modified tests.

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

    -1 javac.  The patch appears to cause tar ant target to fail.

    +1 findbugs.  The patch does not introduce any new Findbugs (version 1.3.9) warnings.

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

    -1 core tests.  The patch failed these core unit tests:

    -1 contrib tests.  The patch failed contrib unit tests.

    -1 system test framework.  The patch failed system test framework compile.

Test results: https://builds.apache.org/job/PreCommit-HDFS-Build/1038//testReport/
Findbugs warnings: https://builds.apache.org/job/PreCommit-HDFS-Build/1038//artifact/trunk/build/test/findbugs/newPatchFindbugsWarnings.html
Console output: https://builds.apache.org/job/PreCommit-HDFS-Build/1038//console

This message is automatically generated.

> When namenode goes down while checkpointing and if is started again subsequent Checkpointing
is always failing
> --------------------------------------------------------------------------------------------------------------
>                 Key: HDFS-1981
>                 URL: https://issues.apache.org/jira/browse/HDFS-1981
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: name-node
>    Affects Versions: 0.22.0
>         Environment: Linux
>            Reporter: ramkrishna.s.vasudevan
>            Assignee: Uma Maheswara Rao G
>            Priority: Blocker
>             Fix For: 0.22.0
>         Attachments: HDFS-1981-1.patch, HDFS-1981-2.patch, HDFS-1981.patch, HDFS-1981_0.22.patch,
> This scenario is applicable in NN and BNN case.
> When the namenode goes down after creating the edits.new, on subsequent restart the divertFileStreams
will not happen to edits.new as the edits.new file is already present and the size is zero.
> so on trying to saveCheckPoint an exception occurs 
> 2011-05-23 16:38:57,476 WARN org.mortbay.log: /getimage: java.io.IOException: GetImage
failed. java.io.IOException: Namenode has an edit log with timestamp of 2011-05-23 16:38:56
but new checkpoint was created using editlog  with timestamp 2011-05-23 16:37:30. Checkpoint
> This is a bug or is that the behaviour.

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