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Posted to yarn-dev@hadoop.apache.org by "Andras Gyori (Jira)" <ji...@apache.org> on 2021/10/29 18:43:00 UTC

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

Andras Gyori created YARN-10996:
-----------------------------------

             Summary: 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


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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