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https://issues.apache.org/jira/browse/YARN-1068?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13771411#comment-13771411
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Karthik Kambatla commented on YARN-1068:
----------------------------------------
Having a separate RMHAAdminService allows handling it through the
super.service*() calls in RMHAProtocolService. This makes it very simple to
create a RMHAProtocolService without the admin parts without having to override
all its service*() calls. In the current patch, MockRM does the following. If
it was all in one RMHAService, this will be much longer and needs to be updated
everytime the actual RMHAService service* methods get updated. Also, don't see
particular downside to having it as a separate service except that it is class.
The RM itself still sees a single service in RMHAProtocolService.
{code}
protected RMHAProtocolService createRMHAProtocolService() {
return new RMHAProtocolService(this) {
@Override
protected RMHAAdminService createRMHAAdminService() {
return null;
}
};
}
{code}
> Add admin support for HA operations
> -----------------------------------
>
> Key: YARN-1068
> URL: https://issues.apache.org/jira/browse/YARN-1068
> Project: Hadoop YARN
> Issue Type: Sub-task
> Components: resourcemanager
> Affects Versions: 2.1.0-beta
> Reporter: Karthik Kambatla
> Assignee: Karthik Kambatla
> Labels: ha
> Attachments: yarn-1068-1.patch, yarn-1068-2.patch, yarn-1068-3.patch,
> yarn-1068-4.patch, yarn-1068-prelim.patch
>
>
> Support HA admin operations to facilitate transitioning the RM to Active and
> Standby states.
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