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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-5958) Use JDK 1.6 File APIs in DF.java wherever possible
Date Thu, 29 Oct 2009 03:00:59 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-5958?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12771266#action_12771266
] 

Hadoop QA commented on HADOOP-5958:
-----------------------------------

-1 overall.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12423529/HADOOP-5958.patch
  against trunk revision 829289.

    +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 patch appears to cause tar ant target to fail.

    -1 findbugs.  The patch appears to cause Findbugs to fail.

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

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

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

Test results: http://hudson.zones.apache.org/hudson/job/Hadoop-Patch-h4.grid.sp2.yahoo.net/111/testReport/
Checkstyle results: http://hudson.zones.apache.org/hudson/job/Hadoop-Patch-h4.grid.sp2.yahoo.net/111/artifact/trunk/build/test/checkstyle-errors.html
Console output: http://hudson.zones.apache.org/hudson/job/Hadoop-Patch-h4.grid.sp2.yahoo.net/111/console

This message is automatically generated.

> Use JDK 1.6 File APIs in DF.java wherever possible
> --------------------------------------------------
>
>                 Key: HADOOP-5958
>                 URL: https://issues.apache.org/jira/browse/HADOOP-5958
>             Project: Hadoop Common
>          Issue Type: Bug
>          Components: fs
>            Reporter: Devaraj Das
>            Assignee: Aaron Kimball
>             Fix For: 0.21.0
>
>         Attachments: HADOOP-5958-hdfs.patch, HADOOP-5958-mapred.patch, HADOOP-5958.patch
>
>
> JDK 1.6 has File APIs like File.getFreeSpace() which should be used instead of spawning
a command process for getting the various disk/partition related attributes. This would avoid
spikes in memory consumption by tasks when things like LocalDirAllocator is used for creating
paths on the filesystem.

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