Suma Shivaprasad commented on YARN-8080:

Fixed some more checkstyle issues

> YARN native service should support component restart policy
> -----------------------------------------------------------
>                 Key: YARN-8080
>                 URL: https://issues.apache.org/jira/browse/YARN-8080
>             Project: Hadoop YARN
>          Issue Type: Task
>            Reporter: Wangda Tan
>            Assignee: Suma Shivaprasad
>            Priority: Critical
>         Attachments: YARN-8080.001.patch, YARN-8080.002.patch, 
> YARN-8080.003.patch, YARN-8080.005.patch, YARN-8080.006.patch, 
> YARN-8080.007.patch, YARN-8080.009.patch, YARN-8080.010.patch, 
> YARN-8080.011.patch, YARN-8080.012.patch, YARN-8080.013.patch, 
> YARN-8080.014.patch, YARN-8080.015.patch, YARN-8080.016.patch, 
> YARN-8080.017.patch
> Existing native service assumes the service is long running and never 
> finishes. Containers will be restarted even if exit code == 0. 
> To support boarder use cases, we need to allow restart policy of component 
> specified by users. Propose to have following policies:
> 1) Always: containers always restarted by framework regardless of container 
> exit status. This is existing/default behavior.
> 2) Never: Do not restart containers in any cases after container finishes: To 
> support job-like workload (for example Tensorflow training job). If a task 
> exit with code == 0, we should not restart the task. This can be used by 
> services which is not restart/recovery-able.
> 3) On-failure: Similar to above, only restart task with exitcode != 0. 
> Behaviors after component *instance* finalize (Succeeded or Failed when 
> restart_policy != ALWAYS): 
> 1) For single component, single instance: complete service.
> 2) For single component, multiple instance: other running instances from the 
> same component won't be affected by the finalized component instance. Service 
> will be terminated once all instances finalized. 
> 3) For multiple components: Service will be terminated once all components 
> finalized.

This message was sent by Atlassian JIRA

To unsubscribe, e-mail: yarn-issues-unsubscr...@hadoop.apache.org
For additional commands, e-mail: yarn-issues-h...@hadoop.apache.org

Reply via email to