[NIFI-1287] Inefficient thread utilization in VolatileContentRepository

• Type: Improvement
• Status: Resolved
• Priority: Minor
• Resolution: Won't Fix
• Affects Version/s: 0.4.0
• Component/s: Core Framework
• Assignee: Oleg Zhurakousky
• Reporter: Oleg Zhurakousky
• Created: 15/Dec/15 21:56
• Updated: 29/Mar/22 11:17
• Resolved: 29/Mar/22 11:17

Description

Still investigating details but here is what I see:

VolatileContentRepository Workers Thread-3" #127 daemon prio=5 os_prio=31 tid=0x00007ff608112800 nid=0x6403 waiting on condition [0x000000011fdac000]
   java.lang.Thread.State: TIMED_WAITING (parking)
	at sun.misc.Unsafe.park(Native Method)
	- parking to wait for  <0x0000000780262190> (a java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject)
	at java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:215)
	at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.awaitNanos(AbstractQueuedSynchronizer.java:2078)
	at java.util.concurrent.LinkedBlockingQueue.poll(LinkedBlockingQueue.java:467)
	at org.apache.nifi.controller.repository.claim.StandardResourceClaimManager.drainDestructableClaims(StandardResourceClaimManager.java:131)
	at org.apache.nifi.controller.repository.VolatileContentRepository$CleanupOldClaims.run(VolatileContentRepository.java:654)
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
	at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308)

Issue Links

• is superceded by: NIFI-9823 Remove VolatileContentRepository