[jboss-jira] [JBoss JIRA] (DROOLS-987) Errors in Phreak under heavy and multi threaded load

[Jose Cavieres (JIRA)]

Jose Cavieres created DROOLS-987:
------------------------------------

             Summary: Errors in Phreak under heavy and multi threaded load 
                 Key: DROOLS-987
                 URL: https://issues.jboss.org/browse/DROOLS-987
             Project: Drools
          Issue Type: Bug
          Components: core engine
    Affects Versions: 6.3.0.Final
         Environment: linux
Java 7
kernel 3.16
            Reporter: Jose Cavieres
            Assignee: Mario Fusco
         Attachments: jbpm-bussinesruletask-concurrent-6-3.tgz

Several threads are started, each one starts 1 jbpm process containing rule(s) task(s).
If the threads are few, everything works fine. Under heavy load nullPointerExceptions are thown most of the time, less frequently fireAllRules never ends and CPU remains at 100%.

Aparently the setFocus method used by rule tasks is related to the problem.

The most comon error is:
Caused by: java.lang.NullPointerException
        at org.drools.core.common.LeftTupleSetsImpl.removeInsert(LeftTupleSetsImpl.java:141)
        at org.drools.core.common.LeftTupleSetsImpl.addDelete(LeftTupleSetsImpl.java:80)
        at org.drools.core.reteoo.LeftInputAdapterNode.doDeleteSegmentMemory(LeftInputAdapterNode.java:295)
        at org.drools.core.reteoo.LeftInputAdapterNode.doDeleteObject(LeftInputAdapterNode.java:266)
        at org.drools.core.reteoo.LeftInputAdapterNode.retractLeftTuple(LeftInputAdapterNode.java:361)
        at org.drools.core.reteoo.ObjectTypeNode.doRetractObject(ObjectTypeNode.java:334)
        at org.drools.core.reteoo.ObjectTypeNode.retractObject(ObjectTypeNode.java:317)
        at org.drools.core.reteoo.EntryPointNode.propagateRetract(EntryPointNode.java:358)
        at org.drools.core.phreak.PropagationEntry$Delete.execute(PropagationEntry.java:172)
        at org.drools.core.phreak.SynchronizedPropagationList.flush(SynchronizedPropagationList.java:96)
        at org.drools.core.phreak.SynchronizedPropagationList.flush(SynchronizedPropagationList.java:69)
        at org.drools.core.impl.StatefulKnowledgeSessionImpl.flushPropagations(StatefulKnowledgeSessionImpl.java:1993)




--
This message was sent by Atlassian JIRA
(v6.4.11#64026)