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Posted to yarn-issues@hadoop.apache.org by "Jian He (JIRA)" <ji...@apache.org> on 2014/07/08 00:15:35 UTC

[jira] [Updated] (YARN-2001) Threshold for RM to accept requests from AM after failover

     [ https://issues.apache.org/jira/browse/YARN-2001?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Jian He updated YARN-2001:
--------------------------

    Attachment: YARN-2001.2.patch

> Threshold for RM to accept requests from AM after failover
> ----------------------------------------------------------
>
>                 Key: YARN-2001
>                 URL: https://issues.apache.org/jira/browse/YARN-2001
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>          Components: resourcemanager
>            Reporter: Jian He
>            Assignee: Jian He
>         Attachments: YARN-2001.1.patch, YARN-2001.2.patch
>
>
> After failover, RM may require a certain threshold to determine whether it’s safe to make scheduling decisions and start accepting new container requests from AMs. The threshold could be a certain amount of nodes. i.e. RM waits until a certain amount of nodes joining before accepting new container requests.  Or it could simply be a timeout, only after the timeout RM accepts new requests. 
> NMs joined after the threshold can be treated as new NMs and instructed to kill all its containers.



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