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From Laurent Marchal <lmarc...@smausa.com>
Subject Re: Deadlock in PoolManager
Date Tue, 23 Nov 2010 16:44:31 GMT
Yeah I was trying to be "clean" and dispose it when I leave the application.

Filed as https://issues.apache.org/jira/browse/CAY-1513

Thank you.
Laurent.

Le 11/23/2010 10:33 AM, Andrus Adamchik a écrit :
> Interesting. I guess we haven't seen it before cause people don't call dispose that often.
>
> Please open a Jira.
>
> Thanks,
> Andrus
>
> On Nov 23, 2010, at 5:54 PM, Laurent Marchal wrote:
>
>> Hi all,
>>
>>     I'm using cayenne 3.0 ans I'm experiencing a deadlock when I exit my application.
I call PoolManager.dispose() to disconnect all connections, but it seems if at the same time
a pooled connection is returned to the pool then it deadlocks.
>>
>> Here is the deadlock as detected by the java console.
>>
>> Thanks,
>> Laurent Marchal.
>>
>> Name: Worker-2
>> State: BLOCKED on com.sma.core.net.OpconPoolManager@197871d owned by: main
>> Total blocked: 327  Total waited: 475
>>
>> Stack trace:
>> org.apache.cayenne.conn.PoolManager.connectionClosed(PoolManager.java:438)
>> org.apache.cayenne.conn.PooledConnectionImpl.connectionClosedNotification(PooledConnectionImpl.java:181)
>>    - locked java.util.Collections$SynchronizedRandomAccessList@12a12fc
>> org.apache.cayenne.conn.PooledConnectionImpl.returnConnectionToThePool(PooledConnectionImpl.java:146)
>> org.apache.cayenne.conn.ConnectionWrapper.close(ConnectionWrapper.java:127)
>> org.apache.cayenne.access.ExternalTransaction.close(ExternalTransaction.java:168)
>> org.apache.cayenne.access.ExternalTransaction.commit(ExternalTransaction.java:105)
>>
>> _______________________________________________________________________________________________________
>>
>> Name: main
>> State: BLOCKED on java.util.Collections$SynchronizedRandomAccessList@12a12fc owned
by: Worker-2
>> Total blocked: 30  Total waited: 122
>>
>> Stack trace:
>> org.apache.cayenne.conn.PooledConnectionImpl.removeConnectionEventListener(PooledConnectionImpl.java:97)
>> org.apache.cayenne.conn.PoolManager.dispose(OpconPoolManager.java:169)
>>    - locked org.apache.cayenne.conn.PoolManager@197871d
>> com.sma.core.session.Session.disconnect(Session.java:189)
>>    - locked java.lang.Object@167a300
>> com.sma.core.session.Session.logout(Session.java:269)
>>    - locked java.lang.Object@167a300
>>

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