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From "Vinod Kumar Vavilapalli (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-422) Add AM-NM client library
Date Tue, 30 Apr 2013 06:10:18 GMT

    [ https://issues.apache.org/jira/browse/YARN-422?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13645307#comment-13645307
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Vinod Kumar Vavilapalli commented on YARN-422:
----------------------------------------------

bq. 1. Semantically, it is a bit strange RM use "AM"NMClient.
Agreed. May be we should just call it NMClient?

bq. 2. Technically, hadoop-yarn-client has dependency on hadoop-yarn-server-resourcemanager
in test scope. If we want to use AMNMClient in AMLauncher, hadoop-yarn-server-resourcemanager
needs to add the dependency on hadoop-yarn-client, forming a circular dependency.
The dependencies are per scope, so there is not circular dependency either in test scope or
non-test scope.

Is this patch ready for review? Or just a definition file? Doesn't seem so.

In any case, I think we need to have either
 - separate call-backs for failures on startContainer() and failure on stopContainer()
 - or may be just one call-back with the original event-type?
                
> Add AM-NM client library
> ------------------------
>
>                 Key: YARN-422
>                 URL: https://issues.apache.org/jira/browse/YARN-422
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>            Reporter: Bikas Saha
>            Assignee: Zhijie Shen
>         Attachments: AMNMClient_Defination.txt, AMNMClient_Definition_Updated_With_Tests.txt,
proposal_v1.pdf
>
>
> Create a simple wrapper over the AM-NM container protocol to provide hide the details
of the protocol implementation.

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