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From "Arun Suresh (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-5532) Make ResourceLocalizationService inside NodeManager independent of containers
Date Thu, 25 Aug 2016 14:14:20 GMT

    [ https://issues.apache.org/jira/browse/YARN-5532?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15436943#comment-15436943
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Arun Suresh commented on YARN-5532:
-----------------------------------

bq. I think ResourceLocalizationService should completely abstract away the requester and
just manage everything via a RequesterID - resource usage per requester
I agree. But I guess we have to think about how this affects the lifetime of the downloaded
Resource now. Earlier, since localization was tied to container lifecycle, when a container
completes, we know exactly which resources need to be cleaned up. We would now probably need
some form of reference checking / garbage collection.

Would be interesting to see how we can plug in YARN-4597 too. I am guessing all we need is
to send the container lifecycle trigger to the localizing service. But we can discuss more
during implementation.


> Make ResourceLocalizationService inside NodeManager independent of containers
> -----------------------------------------------------------------------------
>
>                 Key: YARN-5532
>                 URL: https://issues.apache.org/jira/browse/YARN-5532
>             Project: Hadoop YARN
>          Issue Type: New Feature
>            Reporter: Jian He
>            Assignee: Jian He
>
> The goal is to enable NodeManagers to localize resources while container is running.
Today, resource-localization is always the first step before starting a container. It will
be useful if YARN can localize the resources continuously even while container is running.



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