[rules-users] ArrayIndexOutOfBoundsException under high events load in drools CEP

[ters]

Hi, drools users/developers. As mentioned in subject, I often faced
ArrayIndexOutOfBoundsException under high events load in drools during
marshaling. 
Conditions: drools CEP (5.4.0.Final), Stream mode, fireUntilHalt mode,
during very active marshaling process (in several threads) I often have such
trace:
java.lang.ArrayIndexOutOfBoundsException: 2773
	at
org.drools.marshalling.impl.ProtobufOutputMarshaller.orderFacts(ProtobufOutputMarshaller.java:592)
	at
org.drools.marshalling.impl.ProtobufOutputMarshaller.writeFactHandles(ProtobufOutputMarshaller.java:533)
	at
org.drools.marshalling.impl.ProtobufOutputMarshaller.serializeSession(ProtobufOutputMarshaller.java:139)
	at
org.drools.marshalling.impl.ProtobufOutputMarshaller.writeSession(ProtobufOutputMarshaller.java:100)
	at
org.drools.marshalling.impl.ProtobufMarshaller.marshall(ProtobufMarshaller.java:169)
	at
org.drools.marshalling.impl.ProtobufMarshaller.marshall(ProtobufMarshaller.java:151)
	at
com.blablabla.cep.CEPEventProcessor.marshalWorkingMemory(CEPEventProcessor.java:332)

This exception occurs really often.
I googled fresh tracked bug
https://bugzilla.redhat.com/show_bug.cgi?id=1044577. As I understand, this
bug is fixed in drool 5.3.x branch, but we using drools-core 5.4.0.Final. 

So could you please help me what to do with this exeption? 
Thanks in advance.



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