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https://issues.apache.org/jira/browse/DBCP-513?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Mark Struberg resolved DBCP-513.
--------------------------------
Resolution: Fixed
> Hundreads of threads in Wait state with below stack trace
> ---------------------------------------------------------
>
> Key: DBCP-513
> URL: https://issues.apache.org/jira/browse/DBCP-513
> Project: Commons DBCP
> Issue Type: Bug
> Affects Versions: 2.1.1, 2.6.0
> Environment: Java Version:
> 1.8.0_121
> OS Complete Version:
> Linux sdpvvrwm556 3.10.0-693.11.6.el7.x86_64 #1 SMP Thu Dec 28 14:23:39 EST
> 2017 x86_64 x86_64 x86_64 GNU/Linux
>
> DBCP Jar:
> commons-dbcp2-2.1.1.jar
> Reporter: Mahesh
> Assignee: Mark Struberg
> Priority: Blocker
> Fix For: 2.6.0
>
> Attachments: Screen Shot 2018-08-05 at 10.29.52 AM.png,
> dbcp_lock_1.txt, dbcp_lock_7.txt, dbcpthread.zip
>
>
> Hello Team,
> Our application suddenly stops responding, when we checked thread dump, most
> of the threads are in wait state with below stack trace, we had to restart
> server to make it active, can you pelase provide your inputs on the root
> cause & resolution?
>
> "JSockConn Thread #4532" #40906 prio=5 os_prio=0 tid=0x00007f84382ce800
> nid=0xc692 waiting on condition [0x00007f83d38f8000]
> java.lang.Thread.State: WAITING (parking)
> at sun.misc.Unsafe.park(Native Method)
> - parking to wait for <0x00000005c30a11b8> (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
> org.apache.commons.pool2.impl.LinkedBlockingDeque.takeFirst(LinkedBlockingDeque.java:583)
> at
> org.apache.commons.pool2.impl.GenericObjectPool.borrowObject(GenericObjectPool.java:442)
> at
> org.apache.commons.pool2.impl.GenericObjectPool.borrowObject(GenericObjectPool.java:363)
> at
> org.apache.commons.dbcp2.PoolingDataSource.getConnection(PoolingDataSource.java:134)
> at
> org.apache.commons.dbcp2.BasicDataSource.getConnection(BasicDataSource.java:1533)
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