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From "Lars Hofhansl (Jira)" <j...@apache.org>
Subject [jira] [Updated] (PHOENIX-5579) HRegionServer sometimes does not shut down.
Date Tue, 03 Dec 2019 19:04:00 GMT

     [ https://issues.apache.org/jira/browse/PHOENIX-5579?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Lars Hofhansl updated PHOENIX-5579:
-----------------------------------
    Issue Type: Bug  (was: Improvement)

> HRegionServer sometimes does not shut down.
> -------------------------------------------
>
>                 Key: PHOENIX-5579
>                 URL: https://issues.apache.org/jira/browse/PHOENIX-5579
>             Project: Phoenix
>          Issue Type: Bug
>            Reporter: Lars Hofhansl
>            Priority: Major
>
> I noticed that recently only. Latest build from HBase's branch-1 and latest build from
Phoenix' 4.x-HBase-1.5. I don't know, yet, whether it's a Phoenix or an HBase issues.
> Just filing it here for later reference.
> jstack show this thread as the only non-daemon thread:
> {code:java}
> "pool-11-thread-1" #470 prio=5 os_prio=0 tid=0x0000558a709a4800 nid=0x238e waiting on
condition [0x00007f213ad68000]
>    java.lang.Thread.State: WAITING (parking)
>         at sun.misc.Unsafe.park(Native Method)
>         - parking to wait for  <0x000000058eafece8> (a java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject)
>         at java.util.concurrent.locks.LockSupport.park(LockSupport.java:175)
>         at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2039)
>         at java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:442)
>         at java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1074)
>         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){code}
> No other information. Somebody created a thread pool somewhere and forgot to set the
threads to daemon or is not shutting down the pool properly.
> Edit: I looked for other reference of the locked objects in the stack dump, but didn't
find any.
>  
>  



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