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From "Xuan Gong (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-1459) Handle supergroups, usergroups and ACLs across RMs during failover
Date Tue, 21 Jan 2014 06:09:20 GMT

    [ https://issues.apache.org/jira/browse/YARN-1459?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13877244#comment-13877244
] 

Xuan Gong commented on YARN-1459:
---------------------------------

This patch is based on https://issues.apache.org/jira/browse/YARN-1611.
In YARN-1611, we create a common functionality to read remoteConfiguration. Also, when we
do the refresh*, it will automatically find the active rm, and do the refresh* for this active
rm.

In this patch, we have following:
* when RM goes to active, it will call all the refresh* to get the latest configuration.
* Add idempotent annotation for all refresh* functions. In that case, they will retry if failover
happens.


> Handle supergroups, usergroups and ACLs across RMs during failover
> ------------------------------------------------------------------
>
>                 Key: YARN-1459
>                 URL: https://issues.apache.org/jira/browse/YARN-1459
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>          Components: resourcemanager
>    Affects Versions: 2.2.0
>            Reporter: Karthik Kambatla
>            Assignee: Xuan Gong
>         Attachments: YARN-1459.1.patch
>
>
> The supergroups, usergroups and ACL configurations are per RM and might have been changed
while the RM is running. After failing over, the new Active RM should have the latest configuration
from the previously Active RM.



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