Jian He commented on YARN-1644:

bq. if NM fails to send the increasedContainers to RM,
Even if NM succeeded to send the increasedContainers to RM, if NM re-registers 
back with RM before the container size is updated, RM will also recover the 
container with old resources.

The solution I have in mind is that, we do not keep track of extra 
increasedContainers in NMContext. We always rely on NMContext#containers to 
send the container status. RM will re-size container based on the 
containerStatus in node heartbeat.

> RM-NM protocol changes and NodeStatusUpdater implementation to support 
> container resizing
> -----------------------------------------------------------------------------------------
>                 Key: YARN-1644
>                 URL: https://issues.apache.org/jira/browse/YARN-1644
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>          Components: nodemanager
>            Reporter: Wangda Tan
>            Assignee: MENG DING
>         Attachments: YARN-1644-YARN-1197.4.patch, 
> YARN-1644-YARN-1197.5.patch, YARN-1644.1.patch, YARN-1644.2.patch, 
> YARN-1644.3.patch, yarn-1644.1.patch

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