HConnection in TIMED

Josh Elser

2018-09-28 15:34:15 UTC

That thread is a part of the ThreadPool that HConnection uses and that
thread is simply waiting for a task to execute. It's not indicative of
any problem.

See how the thread is inside of a call to LinkedBlockingQueue#poll()

Post by Lalit Jadhav
While load testing in the application, In Thread dump, collected when the
application was in its highest utilization and found that hconnection was
in TIMED_WATING (Below log occurred continuously)
hconnection-0x52cf832d-shared--pool1-t110 - priority:5 -
threadId:0x00005651030a9800 - nativeId:0x11b - state:TIMED_WAITING
java.lang.Thread.State: TIMED_WAITING (parking)
at sun.misc.Unsafe.park(Native Method)
- parking to wait for <0x00000003f8200ca0> (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
java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1073)
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1134)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:748)
- None--
Can anyone explain this what's going wrong here?
Regards,
*Lalit Jadhav,*
*Database Group Lead.*
*Everything happens to everybody sooner or later if there is time enough*