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  1. JBRULES
  2. JBRULES-2418

Drools Session insert ConcurrentModificationException in Multithreading Enviroment

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      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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          duplicates

          Bug - A problem that impairs or prevents the functions of the product. JBRULES-2346 insert: ConcurrentModificationException on iterate of ObjectTypeConfigurationRegistry#typeConfMap.

          • Major - To be worked after higher priority work items are addressed. When the severity is high and the effort to change it is low to moderate, this term is chosen. Issues in this category likely have an existing workaround but implementation or execution may be non-trivial.
          • Closed

          Bug - A problem that impairs or prevents the functions of the product. JBRULES-2556 ConcurrentModificationException on EntryPoint

          • Major - To be worked after higher priority work items are addressed. When the severity is high and the effort to change it is low to moderate, this term is chosen. Issues in this category likely have an existing workaround but implementation or execution may be non-trivial.
          • Closed

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              etirelli@redhat.com Edson Tirelli
              carned Davide Carnevali (Inactive)
              Archiver:
              rhn-support-ceverson Clark Everson

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                Created:
                Updated:
                Resolved:
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                PagerDuty