[ 
https://issues.apache.org/jira/browse/YARN-2001?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13995243#comment-13995243
 ] 

Karthik Kambatla commented on YARN-2001:
----------------------------------------

I think the epoch idea might work very nicely with the versioning work we plan 
to do as part of YARN-667.

> 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. 
> NMs joined after the threshold can be treated as new NMs and instructed to 
> kill all its containers.



--
This message was sent by Atlassian JIRA
(v6.2#6252)

Reply via email to