Susheel Gupta created YARN-11696:
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Summary: Add debug-level logs in RMAppImpl#aggregateLogReport and
RMAppImpl#getLogAggregationStatusForAppReport
Key: YARN-11696
URL: https://issues.apache.org/jira/browse/YARN-11696
Project: Hadoop YARN
Issue Type: Improvement
Components: yarn
Reporter: Susheel Gupta
Assignee: Susheel Gupta
The events keep increasing in event-queue and many event thread are blocked.
To discover the deadlocking threads, add a few debug level logs to
RMAppImpl#aggregateLogReport and RMAppImpl#getLogAggregationStatusForAppReport.
{code:java}
"RM Event dispatcher" #93 prio=5 os_prio=0 tid=0x00007fcb67120800 nid=0x13e62
waiting on condition [0x00007fbef632a000]
java.lang.Thread.State: WAITING (parking)
at sun.misc.Unsafe.park(Native Method)
- parking to wait for <0x00007fc44cada248> (a
java.util.concurrent.locks.ReentrantReadWriteLock$NonfairSync)
at java.util.concurrent.locks.LockSupport.park(LockSupport.java:175)
at
java.util.concurrent.locks.AbstractQueuedSynchronizer.parkAndCheckInterrupt(AbstractQueuedSynchronizer.java:836)
at
java.util.concurrent.locks.AbstractQueuedSynchronizer.acquireQueued(AbstractQueuedSynchronizer.java:870)
at
java.util.concurrent.locks.AbstractQueuedSynchronizer.acquire(AbstractQueuedSynchronizer.java:1199)
at
java.util.concurrent.locks.ReentrantReadWriteLock$WriteLock.lock(ReentrantReadWriteLock.java:943)
at
org.apache.hadoop.yarn.server.resourcemanager.rmapp.RMAppImpl.aggregateLogReport(RMAppImpl.java:1799)
at
org.apache.hadoop.yarn.server.resourcemanager.rmnode.RMNodeImpl.handleLogAggregationStatus(RMNodeImpl.java:1478)
at
org.apache.hadoop.yarn.server.resourcemanager.rmnode.RMNodeImpl.access$500(RMNodeImpl.java:104)
at
org.apache.hadoop.yarn.server.resourcemanager.rmnode.RMNodeImpl$StatusUpdateWhenHealthyTransition.transition(RMNodeImpl.java:1239)
at
org.apache.hadoop.yarn.server.resourcemanager.rmnode.RMNodeImpl$StatusUpdateWhenHealthyTransition.transition(RMNodeImpl.java:1195)
at
org.apache.hadoop.yarn.state.StateMachineFactory$MultipleInternalArc.doTransition(StateMachineFactory.java:385)
at
org.apache.hadoop.yarn.state.StateMachineFactory.doTransition(StateMachineFactory.java:302)
at
org.apache.hadoop.yarn.state.StateMachineFactory.access$500(StateMachineFactory.java:46)
at
org.apache.hadoop.yarn.state.StateMachineFactory$InternalStateMachine.doTransition(StateMachineFactory.java:487)
- locked <0x00007fc04c0b6970> (a
org.apache.hadoop.yarn.state.StateMachineFactory$InternalStateMachine)
at
org.apache.hadoop.yarn.server.resourcemanager.rmnode.RMNodeImpl.handle(RMNodeImpl.java:667)
at
org.apache.hadoop.yarn.server.resourcemanager.rmnode.RMNodeImpl.handle(RMNodeImpl.java:101)
at
org.apache.hadoop.yarn.server.resourcemanager.ResourceManager$NodeEventDispatcher.handle(ResourceManager.java:1124)
at
org.apache.hadoop.yarn.server.resourcemanager.ResourceManager$NodeEventDispatcher.handle(ResourceManager.java:1108)
at
org.apache.hadoop.yarn.event.AsyncDispatcher.dispatch(AsyncDispatcher.java:219)
at
org.apache.hadoop.yarn.event.AsyncDispatcher$1.run(AsyncDispatcher.java:133)
at java.lang.Thread.run(Thread.java:748) {code}
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