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https://issues.apache.org/jira/browse/HBASE-4831?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Andrew Purtell resolved HBASE-4831.
-----------------------------------
Resolution: Duplicate
Duplicate of HBASE-4745, already resolved
> LRU stats thread should be a daemon thread
> ------------------------------------------
>
> Key: HBASE-4831
> URL: https://issues.apache.org/jira/browse/HBASE-4831
> Project: HBase
> Issue Type: Bug
> Reporter: Prakash Khemani
> Assignee: Prakash Khemani
>
> I have seen the hung processes where the following was the only non-daemon
> thread
> "LRU Statistics #0" prio=10 tid=0x00002ab0bc04f800 nid=0x11ac waiting on
> condition [0x0000000042f57000]
> java.lang.Thread.State: TIMED_WAITING (parking)
> at sun.misc.Unsafe.park(Native Method)
> - parking to wait for <0x00002aaab9a1c000> (a
> java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject)
> at java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:198)
> at
> java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.awaitNanos(AbstractQueuedSynchronizer.java:2025)
> at java.util.concurrent.DelayQueue.take(DelayQueue.java:164)
> at
> java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:609)
> at
> java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:602)
> at
> java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:947)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:907)
> at java.lang.Thread.run(Thread.java:662)
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