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Date: Thu, 28 Feb 2013 04:35:13 +0000 (UTC)
From: "Sandy Ryza (JIRA)" <jira@apache.org>
To: yarn-issues@hadoop.apache.org
Message-ID: <JIRA.12633758.1361645783592.355682.1362026113633@arcas>
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Subject: [jira] [Commented] (YARN-417) Add a poller that allows the AM to
 receive notifications when it is assigned containers
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    [ https://issues.apache.org/jira/browse/YARN-417?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13589177#comment-13589177 ] 

Sandy Ryza commented on YARN-417:
---------------------------------

That's sounds right Chris.  Will include that in the class's doc.

I've thought a little more about the ContainerCompletionReason, and I'm not sure it's necessary, as there are already constants in YarnConfiguration for the special exit codes, and there are only two, ABORTED_CONTAINER_EXIT_STATUS and DISK_FAILED.  As these don't really have to do with configuration, it might make sense to move them to a ContainerExitCodes class, and just point to that class in the doc for ContainerStatus#getExitCode and CallbackHandler#onContainersCompleted

                
> Add a poller that allows the AM to receive notifications when it is assigned containers
> ---------------------------------------------------------------------------------------
>
>                 Key: YARN-417
>                 URL: https://issues.apache.org/jira/browse/YARN-417
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>          Components: api, applications
>    Affects Versions: 2.0.3-alpha
>            Reporter: Sandy Ryza
>            Assignee: Sandy Ryza
>         Attachments: AMRMClientAsync-1.java, AMRMClientAsync.java, YARN-417.patch, YarnAppMaster.java, YarnAppMasterListener.java
>
>
> Writing AMs would be easier for some if they did not have to handle heartbeating to the RM on their own.

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