Tsuyoshi OZAWA commented on YARN-2052:

We can have 2 options for now:

1. Changing container Id format. ContainerId should be an opaque string that 
YARN app developers don't take a dependency on. 
2. Preserving container Id format. RM restart Phase 2 should be transparent  
from YARN users.

> Container ID format and clustertimestamp for Work preserving restart
> --------------------------------------------------------------------
>                 Key: YARN-2052
>                 URL: https://issues.apache.org/jira/browse/YARN-2052
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>          Components: resourcemanager
>            Reporter: Tsuyoshi OZAWA
> We've been discussing whether container id format is changed to include 
> cluster timestamp or not on YARN-556 and YARN-2001. This JIRA is for taking 
> the discussion. 

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