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https://issues.apache.org/jira/browse/YARN-2975?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14252467#comment-14252467
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Karthik Kambatla commented on YARN-2975:
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I understand the concern. Pre-YARN-2910, we were in the exact same place and
haven't seen any issues in practice. Let me take a look again and see if we can
do what you are suggesting - do all of removeApp while holding the writeLock.
Initially, I had a single method, but had to split based on prior accesses.
> FSLeafQueue app lists are accessed without required locks
> ---------------------------------------------------------
>
> Key: YARN-2975
> URL: https://issues.apache.org/jira/browse/YARN-2975
> Project: Hadoop YARN
> Issue Type: Bug
> Affects Versions: 2.6.0
> Reporter: Karthik Kambatla
> Assignee: Karthik Kambatla
> Priority: Blocker
> Attachments: yarn-2975-1.patch
>
>
> YARN-2910 adds explicit locked access to runnable and non-runnable apps in
> FSLeafQueue. As FSLeafQueue has getters for these, they can be accessed
> without locks in other places.
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