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From "Jian He (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (YARN-2001) Threshold for RM to accept requests from AM after failover
Date Tue, 06 May 2014 03:59:21 GMT

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

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

    Description: 
RM may not accept allocate requests from AMs until all the NMs have re-synced back with RM.
This is to eliminate some race conditions like containerIds overlapping between 


  was:
RM should not accept allocate requests from AMs until all the NMs have registered with RM.
For that, RM needs to remember the previous NMs and wait for all the NMs to register.
This is also useful for remembering decommissioned nodes across restarts.


> 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
>
> RM may not accept allocate requests from AMs until all the NMs have re-synced back with
RM. This is to eliminate some race conditions like containerIds overlapping between 



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