[
https://issues.apache.org/jira/browse/YARN-1210?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Jian He reassigned YARN-1210:
-----------------------------
Assignee: Jian He (was: Vinod Kumar Vavilapalli)
> During RM restart, RM should start a new attempt only when previous attempt
> exits for real
> ------------------------------------------------------------------------------------------
>
> Key: YARN-1210
> URL: https://issues.apache.org/jira/browse/YARN-1210
> Project: Hadoop YARN
> Issue Type: Sub-task
> Reporter: Vinod Kumar Vavilapalli
> Assignee: Jian He
>
> When RM recovers, it can wait for existing AMs to contact RM back and then
> kill them forcefully before even starting a new AM. Worst case, RM will start
> a new AppAttempt after waiting for 10 mins ( the expiry interval). This way
> we'll minimize multiple AMs racing with each other. This can help issues with
> downstream components like Pig, Hive and Oozie during RM restart.
> In the mean while, new apps will proceed as usual as existing apps wait for
> recovery.
> This can continue to be useful after work-preserving restart, so that AMs
> which can properly sync back up with RM can continue to run and those that
> don't are guaranteed to be killed before starting a new attempt.
--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators
For more information on JIRA, see: http://www.atlassian.com/software/jira
