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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 04:24:17 GMT

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

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

    Description: 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.  (was: 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 
)

> 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
>
> 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.



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