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Bikas Saha commented on YARN-1489: ---------------------------------- Would be good to see an overall design document, specially for the tricky pieces like reconnecting existing running containers to new app attempts. > [Umbrella] Work-preserving ApplicationMaster restart > ---------------------------------------------------- > > Key: YARN-1489 > URL: https://issues.apache.org/jira/browse/YARN-1489 > Project: Hadoop YARN > Issue Type: Bug > Reporter: Vinod Kumar Vavilapalli > Assignee: Vinod Kumar Vavilapalli > > Today if AMs go down, > - RM kills all the containers of that ApplicationAttempt > - New ApplicationAttempt doesn't know where the previous containers are > running > - Old running containers don't know where the new AM is running. > We need to fix this to enable work-preserving AM restart. The later two > potentially can be done at the app level, but it is good to have a common > solution for all apps where-ever possible. -- This message was sent by Atlassian JIRA (v6.1.4#6159)