Karthik Kambatla commented on YARN-2716:

bq. removeApplicationStateInternal can also use the 
curatorFramework.delete().deletingChildrenIfNeeded() instead of adding all 
children manually ?
safeDelete adds the nodes to a transaction that creates and deletes the fencing 
node as well. Curator transactions don't support {{deletingChildrenIfNeeded}} 

> Refactor ZKRMStateStore retry code with Apache Curator
> ------------------------------------------------------
>                 Key: YARN-2716
>                 URL: https://issues.apache.org/jira/browse/YARN-2716
>             Project: Hadoop YARN
>          Issue Type: Improvement
>            Reporter: Jian He
>            Assignee: Karthik Kambatla
>         Attachments: yarn-2716-1.patch, yarn-2716-2.patch, 
> yarn-2716-prelim.patch, yarn-2716-prelim.patch, yarn-2716-super-prelim.patch
> Per suggestion by [~kasha] in YARN-2131,  it's nice to use curator to 
> simplify the retry logic in ZKRMStateStore.

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