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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HDFS-877) Client-driven block verification not functioning
Date Wed, 20 Jan 2010 03:07:54 GMT

    [ https://issues.apache.org/jira/browse/HDFS-877?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12802636#action_12802636
] 

Hadoop QA commented on HDFS-877:
--------------------------------

+1 overall.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12430826/hdfs-877.txt
  against trunk revision 899747.

    +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 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/Hdfs-Patch-h2.grid.sp2.yahoo.net/100/testReport/
Findbugs warnings: http://hudson.zones.apache.org/hudson/job/Hdfs-Patch-h2.grid.sp2.yahoo.net/100/artifact/trunk/build/test/findbugs/newPatchFindbugsWarnings.html
Checkstyle results: http://hudson.zones.apache.org/hudson/job/Hdfs-Patch-h2.grid.sp2.yahoo.net/100/artifact/trunk/build/test/checkstyle-errors.html
Console output: http://hudson.zones.apache.org/hudson/job/Hdfs-Patch-h2.grid.sp2.yahoo.net/100/console

This message is automatically generated.

> Client-driven block verification not functioning
> ------------------------------------------------
>
>                 Key: HDFS-877
>                 URL: https://issues.apache.org/jira/browse/HDFS-877
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: hdfs client, test
>    Affects Versions: 0.20.1, 0.21.0, 0.22.0
>            Reporter: Todd Lipcon
>            Assignee: Todd Lipcon
>            Priority: Blocker
>         Attachments: hdfs-877-branch20.txt, hdfs-877.txt, hdfs-877.txt, hdfs-877.txt,
hdfs-877.txt, hdfs-877.txt, hdfs-877.txt
>
>
> This is actually the reason for HDFS-734 (TestDatanodeBlockScanner timing out). The issue
is that DFSInputStream relies on readChunk being called one last time at the end of the file
in order to receive the lastPacketInBlock=true packet from the DN. However, DFSInputStream.read
checks pos < getFileLength() before issuing the read. Thus gotEOS never shifts to true
and checksumOk() is never called.

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