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https://issues.apache.org/jira/browse/YARN-353?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13733684#comment-13733684
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Jian He commented on YARN-353:
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bq. I am not sure I understand. If the RM is trying to delete something and the
node does not exist, is there a situation where the RM wants to know that the
node didn't exist and fail if a non-existent node was tried to be deleted?
Agreed. We should specifically check if the node exists or not. Otherwise the
ZK delete() API will throw an exception if node doesn't exist which we don't
want.
> Add Zookeeper-based store implementation for RMStateStore
> ---------------------------------------------------------
>
> Key: YARN-353
> URL: https://issues.apache.org/jira/browse/YARN-353
> Project: Hadoop YARN
> Issue Type: Sub-task
> Components: resourcemanager
> Reporter: Hitesh Shah
> Assignee: Bikas Saha
> Attachments: YARN-353.10.patch, YARN-353.11.patch, YARN-353.1.patch,
> YARN-353.2.patch, YARN-353.3.patch, YARN-353.4.patch, YARN-353.5.patch,
> YARN-353.6.patch, YARN-353.7.patch, YARN-353.8.patch, YARN-353.9.patch
>
>
> Add store that write RM state data to ZK
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