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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (MAPREDUCE-3055) Simplify parameter passing to Application Master from Client. SImplify approach to pass info such appId, ClusterTimestamp and failcount required by App Master.
Date Fri, 23 Sep 2011 10:04:26 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-3055?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13113301#comment-13113301
] 

Hadoop QA commented on MAPREDUCE-3055:
--------------------------------------

+1 overall.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12496244/MAPREDUCE-3055-20110923.txt
  against trunk revision .

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

    +1 tests included.  The patch appears to include 7 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 passed unit tests in .

    +1 contrib tests.  The patch passed contrib unit tests.

Test results: https://builds.apache.org/job/PreCommit-MAPREDUCE-Build/836//testReport/
Console output: https://builds.apache.org/job/PreCommit-MAPREDUCE-Build/836//console

This message is automatically generated.

> Simplify parameter passing to Application Master from Client. SImplify approach to pass
info such  appId, ClusterTimestamp and failcount required by App Master.
> ----------------------------------------------------------------------------------------------------------------------------------------------------------------
>
>                 Key: MAPREDUCE-3055
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-3055
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>          Components: mrv2
>    Affects Versions: 0.23.0
>            Reporter: Hitesh Shah
>            Assignee: Vinod Kumar Vavilapalli
>            Priority: Minor
>             Fix For: 0.23.0
>
>         Attachments: MAPREDUCE-3055-20110922.txt, MAPREDUCE-3055-20110923.txt
>
>
> The Application master needs the application attempt id to register with the Applications
Manager. To create an appAttemptId object, the appId object(needs cluster timestamp and app
id) and failCount are needed.
> Currently, all clients need to pass in the appId, cluster timestamp and fail count to
the app master for the required objects to be constructed. 
> We could look at simplifying this by providing either placeholders that would have values
replaced by the app master launcher or setting it  into the environment ( although that requires
a set of whitelisted env vars that can only be set by the yarn framework ). 

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