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https://issues.apache.org/jira/browse/YARN-422?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13650194#comment-13650194
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Vinod Kumar Vavilapalli commented on YARN-422:
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bq. Is it necessary for the library to stop all containers before stopping
itself?
I think the callers should have the option of stopping together with killing
all containers or stopping without killing all containers.
bq. Note that NMClientAsync doesn't execute the start/stop/query RPC calls
immediately when the corresponding APIs are called. Instead, an event is
scheduled to start a thread later.
We don't need more handlers. That code is written to make sure that, for e.g.,
start doesn't happen on a container that is already asked to be stopped. We
should just pull those changes into your library, they aren't arbitrary code
that needs plugin points.
> Add 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,
> YARN-422.1.patch, YARN-422.2.patch, YARN-422.3.patch
>
>
> Create a simple wrapper over the ContainerManager protocol to provide hide
> the details of the protocol implementation.
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