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From "Mark Struberg (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (DBCP-513) Hundreads of threads in Wait state with below stack trace
Date Thu, 25 Oct 2018 12:54:00 GMT

     [ https://issues.apache.org/jira/browse/DBCP-513?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Mark Struberg updated DBCP-513:
-------------------------------
    Assignee: Mark Struberg

> 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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