[jira] [Created] (YARN-10932) Capacity Scheduler Deadlock - GuaranteedOrZeroCapacityOverTimePolicy

["Matthew Sharp (Jira)" <ji...@apache.org>]

Matthew Sharp created YARN-10932:
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             Summary: Capacity Scheduler Deadlock - GuaranteedOrZeroCapacityOverTimePolicy
                 Key: YARN-10932
                 URL: https://issues.apache.org/jira/browse/YARN-10932
             Project: Hadoop YARN
          Issue Type: Bug
    Affects Versions: 3.3.0
            Reporter: Matthew Sharp
         Attachments: thread_dump.txt

We recently started testing out the GuaranteedOrZeroCapacityOverTimePolicy and ran into an interesting deadlock.

I attached the relevant portions from the thread dump we were able to grab.
{code:java}
 Found one Java-level deadlock:
 =============================
 "qtp2055501967-32194":
      waiting for ownable synchronizer 0x00007f2521f6a850, (a java.util.concurrent.locks.ReentrantReadWriteLock$NonfairSync),
      which is held by "IPC Server handler 0 on default port 8033"
 "IPC Server handler 0 on default port 8033":
      waiting for ownable synchronizer 0x00007f2522026418, (a java.util.concurrent.locks.ReentrantReadWriteLock$NonfairSync),
      which is held by "SchedulingMonitor (QueueManagementDynamicEditPolicy)"
 "SchedulingMonitor (QueueManagementDynamicEditPolicy)":
      waiting for ownable synchronizer 0x00007f25220254c0, (a java.util.concurrent.locks.ReentrantReadWriteLock$NonfairSync),
      which is held by "IPC Server handler 0 on default port 8033" {code}



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