[JBoss JIRA] (DROOLS-215) Corrupted Working/Production memory
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[
https://issues.jboss.org/browse/DROOLS-215?page=com.atlassian.jira.plugin...
]
Ales Dolecek commented on DROOLS-215:
-------------------------------------
Unfortunatelly I got the CCE only once. The application is in production for more than
month, but only recently there started to be some traffic. Also after the issue I changed
the code a bit so it does not use new-instance="false" and the agent is
rebuilding the knowledge base when some of the decision tables change.
Is the logging per session or per knowledge base. Eg. are the memory nodes in working
memory or in production memory. Can't afford too much output to STDOUT - the
application is running as windows service and the STDOUT is redirected to log files.
Ales
Corrupted Working/Production memory
-----------------------------------
Key: DROOLS-215
URL: https://issues.jboss.org/browse/DROOLS-215
Project: Drools
Issue Type: Bug
Security Level: Public(Everyone can see)
Affects Versions: 5.5.0.Final
Reporter: Ales Dolecek
Assignee: Mark Proctor
Attachments: ConcurrentNodeMemories.java
Experienced ClassCastException mixing BetaMemory and AlphaMemory. There is debate in the
mailing list/forum. The problem seems to be related to dymanic updates of knowledgebase.
Saddly there is no deterministic way how to reproduce the issue, but that should not
prevent tracking it here.
Stack trace from my project:
java.lang.ClassCastException: org.drools.reteoo.BetaMemory cannot be cast to
org.drools.reteoo.AlphaNode$AlphaMemory
at org.drools.reteoo.AlphaNode.assertObject(AlphaNode.java:136)
~[drools-core-5.5.0.Final.jar:5.5.0.Final]
at
org.drools.reteoo.CompositeObjectSinkAdapter.doPropagateAssertObject(CompositeObjectSinkAdapter.java:497)
~[drools-core-5.5.0.Final.jar:5.5.0.Final]
at
org.drools.reteoo.CompositeObjectSinkAdapter.propagateAssertObject(CompositeObjectSinkAdapter.java:382)
~[drools-core-5.5.0.Final.jar:5.5.0.Final]
at org.drools.reteoo.ObjectTypeNode.assertObject(ObjectTypeNode.java:235)
~[drools-core-5.5.0.Final.jar:5.5.0.Final]
at org.drools.reteoo.EntryPointNode.assertObject(EntryPointNode.java:240)
~[drools-core-5.5.0.Final.jar:5.5.0.Final]
at org.drools.common.NamedEntryPoint.insert(NamedEntryPoint.java:350)
~[drools-core-5.5.0.Final.jar:5.5.0.Final]
at org.drools.common.NamedEntryPoint.insert(NamedEntryPoint.java:311)
~[drools-core-5.5.0.Final.jar:5.5.0.Final]
at org.drools.common.AbstractWorkingMemory.insert(AbstractWorkingMemory.java:903)
~[drools-core-5.5.0.Final.jar:5.5.0.Final]
at org.drools.base.DefaultKnowledgeHelper.insert(DefaultKnowledgeHelper.java:192)
~[drools-core-5.5.0.Final.jar:5.5.0.Final]
at org.drools.base.DefaultKnowledgeHelper.insert(DefaultKnowledgeHelper.java:186)
~[drools-core-5.5.0.Final.jar:5.5.0.Final]
at
cz.nextiraone.screening.rules.screening.Rule_Telefonni_cislo_z_textu__jen_cifry__225b11d6cd07418aac8c06cf5c86b4b1.defaultConsequence(Rule_Telefonni_cislo_z_textu__jen_cifry__225b11d6cd07418aac8c06cf5c86b4b1.java:7)
~[na
:na]
at
cz.nextiraone.screening.rules.screening.Rule_Telefonni_cislo_z_textu__jen_cifry__225b11d6cd07418aac8c06cf5c86b4b1DefaultConsequenceInvokerGenerated.evaluate(Unknown
Source) ~[na:na]
at
cz.nextiraone.screening.rules.screening.Rule_Telefonni_cislo_z_textu__jen_cifry__225b11d6cd07418aac8c06cf5c86b4b1DefaultConsequenceInvoker.evaluate(Unknown
Source) ~[na:na]
at org.drools.common.DefaultAgenda.fireActivation(DefaultAgenda.java:1287)
~[drools-core-5.5.0.Final.jar:5.5.0.Final]
at org.drools.common.DefaultAgenda.fireNextItem(DefaultAgenda.java:1221)
~[drools-core-5.5.0.Final.jar:5.5.0.Final]
at org.drools.common.DefaultAgenda.fireAllRules(DefaultAgenda.java:1456)
~[drools-core-5.5.0.Final.jar:5.5.0.Final]
at
org.drools.common.AbstractWorkingMemory.fireAllRules(AbstractWorkingMemory.java:710)
~[drools-core-5.5.0.Final.jar:5.5.0.Final]
at
org.drools.common.AbstractWorkingMemory.fireAllRules(AbstractWorkingMemory.java:674)
~[drools-core-5.5.0.Final.jar:5.5.0.Final]
at
org.drools.impl.StatefulKnowledgeSessionImpl.fireAllRules(StatefulKnowledgeSessionImpl.java:230)
~[drools-core-5.5.0.Final.jar:5.5.0.Final]
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Ales Dolecek (JIRA)