[jboss-jira] [JBoss JIRA] Resolved: (JBRULES-2418) Drools Session insert ConcurrentModificationException in Multithreading Enviroment

[Edson Tirelli (JIRA)]

     [ https://jira.jboss.org/browse/JBRULES-2418?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Edson Tirelli resolved JBRULES-2418.
------------------------------------

    Resolution: Done


Thanks for reporting. Problem fixed as part of the linked tickets. I am closing this, but let us know if you still face problems using trunk.

> Drools Session insert ConcurrentModificationException in Multithreading Enviroment
> ----------------------------------------------------------------------------------
>
>                 Key: JBRULES-2418
>                 URL: https://jira.jboss.org/browse/JBRULES-2418
>             Project: Drools
>          Issue Type: Bug
>      Security Level: Public(Everyone can see) 
>          Components: drools-core
>    Affects Versions: 5.0.1.FINAL
>         Environment: Aix on Websphere 6.1 - IBM Java 5
>            Reporter: Davide Carnevali
>            Assignee: Edson Tirelli
>            Priority: Critical
>             Fix For: 5.1.0.CR1
>
>         Attachments: DroolsCondition.java
>
>
> In multithreading enviroment (with 50 active thread) sometimes occurs a ConcurrentModificationException , the complete stacktrace
> Caused by: java.util.ConcurrentModificationException
> 	at java.util.HashMap$HashIterator.nextEntry(HashMap.java:1091)
> 	at java.util.HashMap$ValueIterator.next(HashMap.java:1122)
> 	at org.drools.reteoo.ClassObjectTypeConf.getMatchingObjectTypes(ClassObjectTypeConf.java:171)
> 	at org.drools.reteoo.ClassObjectTypeConf.getObjectTypeNodes(ClassObjectTypeConf.java:163)
> 	at org.drools.reteoo.EntryPointNode.assertObject(EntryPointNode.java:143)
> 	at org.drools.common.AbstractWorkingMemory.insert(AbstractWorkingMemory.java:1046)
> 	at org.drools.common.AbstractWorkingMemory.insert(AbstractWorkingMemory.java:1001)
> 	at org.drools.common.AbstractWorkingMemory.insert(AbstractWorkingMemory.java:788)
> 	at it.vtfinance.vtpie.mlp.bpm.conditions.DroolsCondition.passesCondition(DroolsCondition.java:52)
> 	at com.opensymphony.workflow.AbstractWorkflow.passesCondition(AbstractWorkflow.java:904)
> 	... 24 more
> DroolsCondition is SINGLETONE, all thread use a same RuleBase but creates a new Session for each Thread.

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