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https://issues.apache.org/jira/browse/YARN-1027?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13760774#comment-13760774
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Karthik Kambatla commented on YARN-1027:
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In yarn-1027-4.patch, the RM always addService(HAServiceProtocol).
HAServiceProtocol is the one that checks if haEnabled in serviceStart(). If
enabled then it transitions to standby and waits for active signal. If not,
then it directly transitions to active.
However, post RM#init(), RM fields are not instantiated (e.g. TokenManagers)
leading a bunch of test failures.
> Implement RMHAServiceProtocol
> -----------------------------
>
> Key: YARN-1027
> URL: https://issues.apache.org/jira/browse/YARN-1027
> Project: Hadoop YARN
> Issue Type: Sub-task
> Reporter: Bikas Saha
> Assignee: Karthik Kambatla
> Attachments: test-yarn-1027.patch, yarn-1027-1.patch,
> yarn-1027-2.patch, yarn-1027-3.patch, yarn-1027-4.patch,
> yarn-1027-including-yarn-1098-3.patch, yarn-1027-in-rm-poc.patch
>
>
> Implement existing HAServiceProtocol from Hadoop common. This protocol is the
> single point of interaction between the RM and HA clients/services.
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