Jiandan Yang  commented on YARN-7715:

Thanks [~miklos.szeg...@cloudera.com]
Updating execution type also needs to update cgroup(cfs_period_us, 
cfs_quota_us, shares), AM is not notified when update cgroup fail.

Recover container will error when NM restarts if not storing updated execution 

> Support NM promotion/demotion of running containers.
> ----------------------------------------------------
>                 Key: YARN-7715
>                 URL: https://issues.apache.org/jira/browse/YARN-7715
>             Project: Hadoop YARN
>          Issue Type: Bug
>            Reporter: Arun Suresh
>            Assignee: Miklos Szegedi
>            Priority: Major
>             Fix For: 3.2.0
>         Attachments: YARN-7715.000.patch, YARN-7715.001.patch, 
> YARN-7715.002.patch, YARN-7715.003.patch, YARN-7715.004.patch
> In YARN-6673 and YARN-6674, the cgroups resource handlers update the cgroups 
> params for the containers, based on opportunistic or guaranteed, in the 
> *preStart* method.
> Now that YARN-5085 is in, Container executionType (as well as the cpu, memory 
> and any other resources) can be updated after the container has started. This 
> means we need the ability to change cgroups params after container start.

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