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https://issues.apache.org/jira/browse/YARN-10996?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Szilard Nemeth resolved YARN-10996.
-----------------------------------
Hadoop Flags: Reviewed
Resolution: Fixed
> Fix race condition of User object acquisitions
> ----------------------------------------------
>
> Key: YARN-10996
> URL: https://issues.apache.org/jira/browse/YARN-10996
> Project: Hadoop YARN
> Issue Type: Bug
> Reporter: Andras Gyori
> Assignee: Andras Gyori
> Priority: Major
> Labels: pull-request-available
> Fix For: 3.4.0
>
> Time Spent: 50m
> Remaining Estimate: 0h
>
> UserManager is highly susceptible of removing users that are queried later.
> This race condition produces NPE similar to YARN-10934. A non-exhaustive list
> of these locations are:
> - LeafQueue.getTotalPendingResourcesConsideringUserLimit
> - UsersManager.computeUserLimit
>
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