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https://issues.apache.org/jira/browse/YARN-659?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13794028#comment-13794028
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Tsuyoshi OZAWA commented on YARN-659:
-------------------------------------
[~maysamyabandeh], in the FileSystemRMStateStore case, we can avoid using
ApplicationAttemptId by deleting the directory recursively. The trunk code do
this.
One problem is that ZKRMStateStore cannot remove znode recursively. If
removeApplication is only passed ApplicationId, we cannot know
applicationAttemptIds to be deleted. We need to change znode structure. My
proposal is as follows:
{code}
RM_APP_ROOT
|---/(#appId)
|---/attemptIds_(#appId)/(#applicationAttemptIds)
{code}
Note that #appId and #applicationAttemptIds are evaluated as String value, and
attemptIds_ is a just prefix. To do this, we need to change not only
removeApplicationState and storeApplicationAttemptState but also loadRMAppState.
> RMStateStore's removeApplication APIs should just take an applicationId
> -----------------------------------------------------------------------
>
> Key: YARN-659
> URL: https://issues.apache.org/jira/browse/YARN-659
> Project: Hadoop YARN
> Issue Type: Sub-task
> Components: resourcemanager
> Reporter: Vinod Kumar Vavilapalli
> Assignee: Tsuyoshi OZAWA
>
> There is no need to give in the whole state for removal - just an ID should
> be enough when an app finishes.
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