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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-2275) Erroneous detection of corrupted file when namenode fails to allocate any datanodes for newly allocated block
Date Wed, 28 Nov 2007 18:09:44 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-2275?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12546323

Hadoop QA commented on HADOOP-2275:

-1 overall.  Here are the results of testing the latest attachment 
against trunk revision r598984.

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

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

    javac +1.  The applied patch does not generate any new compiler warnings.

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

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

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

Test results: http://lucene.zones.apache.org:8080/hudson/job/Hadoop-Patch/1189/testReport/
Findbugs warnings: http://lucene.zones.apache.org:8080/hudson/job/Hadoop-Patch/1189/artifact/trunk/build/test/findbugs/newPatchFindbugsWarnings.html
Checkstyle results: http://lucene.zones.apache.org:8080/hudson/job/Hadoop-Patch/1189/artifact/trunk/build/test/checkstyle-errors.html
Console output: http://lucene.zones.apache.org:8080/hudson/job/Hadoop-Patch/1189/console

This message is automatically generated.

> Erroneous detection of corrupted file when namenode fails to allocate any datanodes for
newly allocated block
> -------------------------------------------------------------------------------------------------------------
>                 Key: HADOOP-2275
>                 URL: https://issues.apache.org/jira/browse/HADOOP-2275
>             Project: Hadoop
>          Issue Type: Bug
>          Components: dfs
>    Affects Versions: 0.15.0
>            Reporter: dhruba borthakur
>            Assignee: dhruba borthakur
>         Attachments: badBlocks1.patch, badBlocks1.patch
> It can so happen that the namenode allocated a block for a file and then fails to allocate
any datanode for this block. The namenode delivers an exception to the client. The client
retries. But the block remains associated with the file (until lease expiration). This causes
all client retries to fail.
> An fsck (before the lease expires) reports this block as a missing block.

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