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From Pål GD (JIRA) <j...@apache.org>
Subject [jira] Commented: (OPENJPA-398) ConcurrentModificationException at org.apache.openjpa.kernel.BrokerImpl
Date Sun, 22 Jun 2008 17:01:44 GMT

    [ https://issues.apache.org/jira/browse/OPENJPA-398?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12607107#action_12607107
] 

Pål GD commented on OPENJPA-398:
--------------------------------

Do you have a reference in the class you're accessing to an object of the same class?
This mail to the users list explains how to reproduce. This error also affects 1.1.0!

http://mail-archives.apache.org/mod_mbox/openjpa-users/200806.mbox/%3C8F5D4C634753484685F8A5F5F38757002A483A9282@Mailserver1.tecwel.local%3E

> ConcurrentModificationException at org.apache.openjpa.kernel.BrokerImpl
> -----------------------------------------------------------------------
>
>                 Key: OPENJPA-398
>                 URL: https://issues.apache.org/jira/browse/OPENJPA-398
>             Project: OpenJPA
>          Issue Type: Bug
>          Components: kernel
>    Affects Versions: 1.0.0
>            Reporter: Alexander
>            Priority: Critical
>
> Hello.
>  
> I'm trying to use OpenJPA in my project. I use Liferay based on Toncat as front-end.
> I use OpenJPA 1.0.0
> Today I have got strange exception - 
> 10:35:55,785 ERROR ConcurrentModificationException at java.util.HashMap$HashIterator.nextEntry(HashMap.java:787)
 at java.util.HashMap$KeyIterator.next(HashMap.java:823) at org.apache.openjpa.kernel.BrokerImpl$ManagedCache.dirtyCheck(BrokerImpl.java:4612)
>         at org.apache.openjpa.kernel.BrokerImpl$ManagedCache.access$000(BrokerImpl.java:4352)
at org.apache.openjpa.kernel.BrokerImpl.hasTransactionalObjects(BrokerImpl.java:3731)
>         at org.apache.openjpa.kernel.BrokerImpl.setDirty(BrokerImpl.java:3848) at org.apache.openjpa.kernel.StateManagerImpl.setPCState(StateManagerImpl.java:207)
>         at org.apache.openjpa.kernel.StateManagerImpl.dirty(StateManagerImpl.java:1532)
at org.apache.openjpa.kernel.StateManagerImpl.dirty(StateManagerImpl.java:1471)
>         at org.apache.openjpa.kernel.StateManagerImpl.dirtyCheck(StateManagerImpl.java:808)
at org.apache.openjpa.kernel.BrokerImpl$ManagedCache.dirtyCheck(BrokerImpl.java:4612)
>         at org.apache.openjpa.kernel.BrokerImpl$ManagedCache.access$000(BrokerImpl.java:4352)
at org.apache.openjpa.kernel.BrokerImpl.hasTransactionalObjects(BrokerImpl.java:3731)
>         at org.apache.openjpa.kernel.BrokerImpl.setDirty(BrokerImpl.java:3848) at org.apache.openjpa.kernel.StateManagerImpl.setPCState(StateManagerImpl.java:207)
>         at org.apache.openjpa.kernel.StateManagerImpl.dirty(StateManagerImpl.java:1532)
at org.apache.openjpa.kernel.StateManagerImpl.dirty(StateManagerImpl.java:1471)
>         at org.apache.openjpa.kernel.StateManagerImpl.dirtyCheck(StateManagerImpl.java:808)
at org.apache.openjpa.kernel.BrokerImpl$ManagedCache.dirtyCheck(BrokerImpl.java:4612)
>         at org.apache.openjpa.kernel.BrokerImpl$ManagedCache.access$000(BrokerImpl.java:4352)
>  
> It happens only, when I deploy application on portal, and only when service is first-time
accessed.
> All tests work fine.
>  
> Exception throws in get method
> Transactions are managed by Spring and i use Spring agent.

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