[jira] [Reopened] (MAPREDUCE-3034) NM should act on a REBOOT command from RM

["Vinod Kumar Vavilapalli (Reopened) (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/MAPREDUCE-3034?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Vinod Kumar Vavilapalli reopened MAPREDUCE-3034:
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bq. Sounds good. I would rather see it done correctly all the way, instead of just shutting down the node manager.
I agree. Let me reopen this and downgrade the importance.
                
> NM should act on a REBOOT command from RM
> -----------------------------------------
>
>                 Key: MAPREDUCE-3034
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-3034
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>          Components: mrv2, nodemanager
>    Affects Versions: 0.23.0, 0.24.0
>            Reporter: Vinod Kumar Vavilapalli
>            Priority: Blocker
>             Fix For: 0.23.0
>
>         Attachments: MR-3034.txt
>
>
> RM sends a reboot command to NM in some cases, like when it gets lost and rejoins back. In such a case, NM should act on the command and reboot/reinitalize itself.
> This is akin to TT reinitialize on order from JT. We will need to shutdown all the services properly and reinitialize - this should automatically take care of killing of containers, cleaning up local temporary files etc.

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