Andrew Wang updated YARN-4843:
    Priority: Critical  (was: Major)

> [Umbrella] Revisit YARN ProtocolBuffer int32 usages that need to upgrade to 
> int64
> ---------------------------------------------------------------------------------
>                 Key: YARN-4843
>                 URL: https://issues.apache.org/jira/browse/YARN-4843
>             Project: Hadoop YARN
>          Issue Type: Bug
>          Components: api
>    Affects Versions: 3.0.0-alpha1
>            Reporter: Wangda Tan
>            Priority: Critical
> This JIRA is to track all int32 usages in YARN's ProtocolBuffer APIs that we 
> possibly need to update to int64.
> One example is resource API. We use int32 for memory now, if a cluster has 
> 10k nodes, each node has 210G memory, we will get a negative total cluster 
> memory.
> We may have other fields may need to upgrade from int32 to int64. 

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