MENG DING commented on YARN-4138:

bq. if multiple requests comes for same container, and that increase token 
expires, do we need to set back the very first container resource. I feel we 
can reset to the first container increase request's start resource unit.
I think we need to set back to the original resource before the first increase 
request. Is this what you think, or you have different idea?

> Roll back container resource allocation after resource increase token expires
> -----------------------------------------------------------------------------
>                 Key: YARN-4138
>                 URL: https://issues.apache.org/jira/browse/YARN-4138
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>          Components: api, nodemanager, resourcemanager
>            Reporter: MENG DING
>            Assignee: Sunil G
> In YARN-1651, after container resource increase token expires, the running 
> container is killed.
> This ticket will change the behavior such that when a container resource 
> increase token expires, the resource allocation of the container will be 
> reverted back to the value before the increase.

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