[rules-users] deadlock

[Smita S. Deshpande]

Hi,

We are currently using drools 5.0.1 for processing business rules. But we are currently facing an issue where if we invoke the rule using 10 concurrent requests , thread gets locked . The error is as below .

Deadlock/Blocked

Monitor

Owns Monitor Lock on org/drools/rule/JavaDialectRuntimeData$PackageClassLoader at 0E99F9B8/0E99F9C4
Waiting for Monitor Lock on org/drools/rule/CompositeClassLoader at 0DB50DC0/0DB50DCC

Java Stack

at java/lang/ClassLoader.loadClass(ClassLoader.java:606(Compiled Code))
at java/lang/Class.forNameImpl(Native Method)
at java/lang/Class.forName(Class.java:163(Compiled Code))
at org/drools/rule/JavaDialectRuntimeData$PackageClassLoader.loadClass(JavaDialectRuntimeData.java:458(Compiled Code))
at java/lang/ClassLoader.loadClass(ClassLoader.java:606(Compiled Code))
at /Rule_AutoUW_Rule_BR12Constants_153_0ConsequenceInvoker.evaluate(Rule_AutoUW_Rule_BR12Constants_153_0ConsequenceInvoker.java:16)
at org/drools/common/DefaultAgenda.fireActivation(DefaultAgenda.java:934(Compiled Code))
at org/drools/common/DefaultAgenda.fireNextItem(DefaultAgenda.java:885(Compiled Code))
at org/drools/common/DefaultAgenda.fireAllRules(DefaultAgenda.java:1086(Compiled Code))
at org/drools/common/AbstractWorkingMemory.fireAllRules(AbstractWorkingMemory.java:661(Compiled Code))
at org/drools/common/AbstractWorkingMemory.fireAllRules(AbstractWorkingMemory.java:637(Compiled Code))
at org/drools/reteoo/ReteooStatelessSession.execute(ReteooStatelessSession.java:203(Compiled Code))



Can you please advice .This has been occurring on Production systems and causing failures

Thanks & Regards,
Smita Deshpande
Technical Specialist - DU UK Insurance
Mastek Ltd | Cerebrum,2nd Floor, KalyaniNagar, Pune, Maharashtra, INDIA
(M)(0)9823041314 | (T) 91 20 66072000 Extn - 2256 | VOIP: 729 | www.mastek.com<http://www.mastek.com/>
Email:- smita.deshpande at mastek.com<mailto:smita.deshpande at mastek.com>

MASTEK LTD.
In the US, we're called MAJESCOMASTEK

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