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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, 15 Jun 2011 17:57:47 GMT

    [ https://issues.apache.org/jira/browse/HDFS-1981?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13049924#comment-13049924
] 

Hadoop QA commented on HDFS-1981:
---------------------------------

-1 overall.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12482669/HDFS-1981.patch
  against trunk revision 1135329.

    +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 applied patch generated 32 javac compiler warnings (more than the trunk's
current 31 warnings).

    -1 findbugs.  The patch appears to introduce 1 new Findbugs (version 1.3.9) warnings.

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

    -1 core tests.  The patch failed these core unit tests:
                  org.apache.hadoop.cli.TestHDFSCLI
                  org.apache.hadoop.hdfs.TestHDFSTrash

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

    +1 system test framework.  The patch passed system test framework compile.

Test results: https://builds.apache.org/job/PreCommit-HDFS-Build/786//testReport/
Findbugs warnings: https://builds.apache.org/job/PreCommit-HDFS-Build/786//artifact/trunk/build/test/findbugs/newPatchFindbugsWarnings.html
Console output: https://builds.apache.org/job/PreCommit-HDFS-Build/786//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: 0.23.0
>         Environment: Linux
>            Reporter: ramkrishna.s.vasudevan
>             Fix For: 0.23.0
>
>         Attachments: HDFS-1981.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
Aborted.
> This is a bug or is that the behaviour.

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