sandflee commented on YARN-3387:

Jian He, thanks for the reiew.
Yes, they're same right now, and I'll add a test case later

> container complete message couldn't pass to am if am restarted and rm changed
> -----------------------------------------------------------------------------
>                 Key: YARN-3387
>                 URL: https://issues.apache.org/jira/browse/YARN-3387
>             Project: Hadoop YARN
>          Issue Type: Bug
>          Components: resourcemanager
>    Affects Versions: 2.6.0
>            Reporter: sandflee
>            Priority: Critical
>              Labels: patch
>         Attachments: YARN-3387.001.patch
> suppose am work preserving and rm ha is enabled.
> container complete message is passed to appattemt.justFinishedContainers in 
> rm。in normal situation,all attempt in one app shares the same 
> justFinishedContainers, but when rm changed, every attempt has it's own 
> justFinishedContainers, so in situations below, container complete message 
> couldn't passed to am:
> 1, am restart
> 2, rm changes
> 3, container launched by first am completes
> container complete message will be passed to appAttempt1 not appAttempt2, but 
> am pull finished containers from appAttempt2 (currentAppAttempt)

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