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From "Karthik Kambatla (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-1734) RM should get the updated Configurations when it transits from Standby to Active
Date Mon, 03 Mar 2014 19:08:26 GMT

    [ https://issues.apache.org/jira/browse/YARN-1734?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13918437#comment-13918437
] 

Karthik Kambatla commented on YARN-1734:
----------------------------------------

I guess the ambiguity stems from the definition of success for {{rmadmin -refresh*}} commands.

I propose adding a config - yarn.resourcemanager.ha.refresh-all-rms. When set, the refresh
commands should attempt to refresh on all RMs and fail if it can't - i.e., this should fail
when called on the StandbyRM? When cleared, the refresh command should attempt to refresh
only on this RM and should succeed as long as the configs are refreshed as early as they are
required - i.e., it should be okay to refresh on transition to active and the StandbyRM should
also succeed? [~xgong], [~vinodkv] - do you think this captures the behavior well enough and
is reasonable? 

> RM should get the updated Configurations when it transits from Standby to Active
> --------------------------------------------------------------------------------
>
>                 Key: YARN-1734
>                 URL: https://issues.apache.org/jira/browse/YARN-1734
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>            Reporter: Xuan Gong
>            Assignee: Xuan Gong
>            Priority: Critical
>             Fix For: 2.4.0
>
>         Attachments: YARN-1734.1.patch, YARN-1734.2.patch, YARN-1734.3.patch, YARN-1734.4.patch,
YARN-1734.5.patch, YARN-1734.6.patch, YARN-1734.7.patch
>
>
> Currently, we have ConfigurationProvider which can support LocalConfiguration, and FileSystemBasedConfiguration.
When HA is enabled, and FileSystemBasedConfiguration is enabled, RM can not get the updated
Configurations when it transits from Standby to Active



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