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:
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"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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