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Posted to yarn-dev@hadoop.apache.org by "Szilard Nemeth (Jira)" <ji...@apache.org> on 2021/11/12 14:35:00 UTC

[jira] [Resolved] (YARN-10996) Fix race condition of User object acquisitions

     [ https://issues.apache.org/jira/browse/YARN-10996?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

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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