[ https://issues.apache.org/jira/browse/YARN-1210?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Omkar Vinit Joshi updated YARN-1210: ------------------------------------ Attachment: YARN-1210.5.patch > 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: Omkar Vinit Joshi > Attachments: YARN-1210.1.patch, YARN-1210.2.patch, YARN-1210.3.patch, > YARN-1210.4.patch, YARN-1210.4.patch, YARN-1210.5.patch > > > 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 was sent by Atlassian JIRA (v6.1#6144)