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Date: Fri, 23 Sep 2011 14:16:26 +0000 (UTC)
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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.
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    [ https://issues.apache.org/jira/browse/MAPREDUCE-3055?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13113463#comment-13113463 ] 

Hudson commented on MAPREDUCE-3055:
-----------------------------------

Integrated in Hadoop-Hdfs-trunk-Commit #1022 (See [https://builds.apache.org/job/Hadoop-Hdfs-trunk-Commit/1022/])
    MAPREDUCE-3055. Simplified ApplicationAttemptId passing to ApplicationMaster via environment variable. (vinodkv)

vinodkv : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1174785
Files : 
* /hadoop/common/trunk/hadoop-mapreduce-project/CHANGES.txt
* /hadoop/common/trunk/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-app/src/main/java/org/apache/hadoop/mapreduce/v2/app/MRAppMaster.java
* /hadoop/common/trunk/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-jobclient/src/main/java/org/apache/hadoop/mapred/YARNRunner.java
* /hadoop/common/trunk/hadoop-mapreduce-project/hadoop-yarn/hadoop-yarn-api/src/main/java/org/apache/hadoop/yarn/api/ApplicationConstants.java
* /hadoop/common/trunk/hadoop-mapreduce-project/hadoop-yarn/hadoop-yarn-common/src/main/java/org/apache/hadoop/yarn/util/ConverterUtils.java
* /hadoop/common/trunk/hadoop-mapreduce-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/src/main/java/org/apache/hadoop/yarn/server/nodemanager/webapp/ContainerLogsPage.java
* /hadoop/common/trunk/hadoop-mapreduce-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/src/main/java/org/apache/hadoop/yarn/server/nodemanager/webapp/ContainerPage.java
* /hadoop/common/trunk/hadoop-mapreduce-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/amlauncher/AMLauncher.java
* /hadoop/common/trunk/hadoop-mapreduce-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/amlauncher/ApplicationMasterLauncher.java
* /hadoop/common/trunk/hadoop-mapreduce-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/MockRM.java
* /hadoop/common/trunk/hadoop-mapreduce-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/TestApplicationMasterLauncher.java
* /hadoop/common/trunk/hadoop-mapreduce-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/applicationsmanager/TestApplicationMasterLauncher.java


> 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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