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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-1120) Make DataNode's block-to-device placement policy pluggable
Date Mon, 28 Mar 2011 06:26:05 GMT

    [ https://issues.apache.org/jira/browse/HDFS-1120?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13011921#comment-13011921
] 

Hadoop QA commented on HDFS-1120:
---------------------------------

-1 overall.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12474716/HDFS-1120.r3.diff
  against trunk revision 1085509.

    +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 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.TestDFSShell
                  org.apache.hadoop.hdfs.TestFileConcurrentReader

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

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

Test results: https://hudson.apache.org/hudson/job/PreCommit-HDFS-Build/292//testReport/
Findbugs warnings: https://hudson.apache.org/hudson/job/PreCommit-HDFS-Build/292//artifact/trunk/build/test/findbugs/newPatchFindbugsWarnings.html
Console output: https://hudson.apache.org/hudson/job/PreCommit-HDFS-Build/292//console

This message is automatically generated.

> Make DataNode's block-to-device placement policy pluggable
> ----------------------------------------------------------
>
>                 Key: HDFS-1120
>                 URL: https://issues.apache.org/jira/browse/HDFS-1120
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>          Components: data-node
>            Reporter: Jeff Hammerbacher
>            Assignee: Harsh J Chouraria
>             Fix For: 0.23.0
>
>         Attachments: HDFS-1120.r1.diff, HDFS-1120.r2.diff, HDFS-1120.r3.diff
>
>
> As discussed on the mailing list, as the number of disk drives per server increases,
it would be useful to allow the DataNode's policy for new block placement to grow in sophistication
from the current round-robin strategy.

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