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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-1371) One bad node can incorrectly flag many files as corrupt
Date Thu, 19 May 2011 20:26:47 GMT

    [ https://issues.apache.org/jira/browse/HDFS-1371?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13036430#comment-13036430
] 

Hadoop QA commented on HDFS-1371:
---------------------------------

-1 overall.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12479689/HDFS-1371.0518.2.patch
  against trunk revision 1125057.

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

    +1 tests included.  The patch appears to include 11 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 (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.hdfs.TestDFSStorageStateRecovery
                  org.apache.hadoop.hdfs.TestFileConcurrentReader
                  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/hudson/job/PreCommit-HDFS-Build/588//testReport/
Findbugs warnings: https://builds.apache.org/hudson/job/PreCommit-HDFS-Build/588//artifact/trunk/build/test/findbugs/newPatchFindbugsWarnings.html
Console output: https://builds.apache.org/hudson/job/PreCommit-HDFS-Build/588//console

This message is automatically generated.

> One bad node can incorrectly flag many files as corrupt
> -------------------------------------------------------
>
>                 Key: HDFS-1371
>                 URL: https://issues.apache.org/jira/browse/HDFS-1371
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: hdfs client, name-node
>    Affects Versions: 0.20.1, 0.23.0
>         Environment: yahoo internal version 
> [knoguchi@gwgd4003 ~]$ hadoop version
> Hadoop 0.20.104.3.1007030707
>            Reporter: Koji Noguchi
>            Assignee: Tanping Wang
>             Fix For: 0.23.0
>
>         Attachments: HDFS-1371.04252011.patch, HDFS-1371.0503.patch, HDFS-1371.0513.patch,
HDFS-1371.0515.patch, HDFS-1371.0517.2.patch, HDFS-1371.0517.patch, HDFS-1371.0518.2.patch,
HDFS-1371.0518.patch
>
>
> On our cluster, 12 files were reported as corrupt by fsck even though the replicas on
the datanodes were healthy.
> Turns out that all the replicas (12 files x 3 replicas per file) were reported corrupt
from one node.
> Surprisingly, these files were still readable/accessible from dfsclient (-get/-cat) without
any problems.

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