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Date: Sun, 29 Aug 2010 21:47:53 -0400 (EDT)
From: "Krishna Ramachandran (JIRA)" <jira@apache.org>
To: mapreduce-issues@hadoop.apache.org
Subject: [jira] Updated: (MAPREDUCE-2020) Use new FileContext APIs for all
 mapreduce components
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     [ https://issues.apache.org/jira/browse/MAPREDUCE-2020?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Krishna Ramachandran updated MAPREDUCE-2020:
--------------------------------------------

    Attachment: mapred-2020.patch

First cut. With primary focus on JobTracker, UserLogCleaner and some util classes

TaskTracker, JobHistory, CleanUpQueue and other components are "work in progress" and not part of this

Initial Goal is:
get initial feedback from mapred and hdfs 
ask for enhancements/fixes from DFS where inadequate/broken
Optimize/eliminate needless RPC calls (exists() checks)
Streamline API calls (eliminate to FileSystem)

refactoring - work in progress

"ant test" did not show any regressions

testpatch output

     [exec]
     [exec] -1 overall.
     [exec]
     [exec]     +1 @author.  The patch does not contain any @author tags.
     [exec]
     [exec]     +1 tests included.  The patch appears to include 6 new or modified tests.
     [exec]
     [exec]     +1 javadoc.  The javadoc tool did not generate any warning messages.
     [exec]
     [exec]     +1 javac.  The applied patch does not increase the total number of javac compiler warnings.
     [exec]
     [exec]     +1 findbugs.  The patch does not introduce any new Findbugs warnings.
     [exec]
     [exec]     -1 Eclipse classpath. The patch causes the Eclipse classpath to differ from the contents of the lib directories.


> Use new FileContext APIs for all mapreduce components 
> ------------------------------------------------------
>
>                 Key: MAPREDUCE-2020
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-2020
>             Project: Hadoop Map/Reduce
>          Issue Type: Improvement
>    Affects Versions: 0.22.0
>            Reporter: Krishna Ramachandran
>            Assignee: Krishna Ramachandran
>         Attachments: mapred-2020.patch
>
>
> Migrate mapreduce components to using improved FileContext APIs implemented in
> HADOOP-4952 and 
> HADOOP-6223

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