Bug 1199201

Summary:	NPE when incremental compilation removes a rule in stream mode
Product:	[Retired] JBoss BRMS Platform 6	Reporter:	Mario Fusco <mfusco>
Component:	BRE	Assignee:	Mario Fusco <mfusco>
Status:	CLOSED EOL	QA Contact:	Marek Winkler <mwinkler>
Severity:	high	Docs Contact:
Priority:	high
Version:	6.2.0	CC:	etirelli, rrajasek
Target Milestone:	CR1
Target Release:	6.1.0
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2020-03-27 18:36:21 UTC	Type:	Bug
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:

Description Mario Fusco 2015-03-05 15:52:37 UTC

When in stream mode a rule is removed by an incremental compilation, the right tuples in the stream queues of the memories of the correspondingly removed beta nodes don't get unlinked. This causes the following NPE when you try to programmatically remove from the session the fact to which one of those right tuple was referring to:

java.lang.NullPointerException
	at org.drools.core.reteoo.NotNode.doDeleteRightTuple(NotNode.java:184)
	at org.drools.core.reteoo.NotNode.retractRightTuple(NotNode.java:172)
	at org.drools.core.reteoo.ObjectTypeNode.doRetractObject(ObjectTypeNode.java:347)
	at org.drools.core.reteoo.ObjectTypeNode.retractObject(ObjectTypeNode.java:339)
	at org.drools.core.reteoo.EntryPointNode.retractObject(EntryPointNode.java:392)
	at org.drools.core.common.NamedEntryPoint.delete(NamedEntryPoint.java:556)
	at org.drools.core.common.NamedEntryPoint.delete(NamedEntryPoint.java:519)
	at org.drools.core.impl.StatefulKnowledgeSessionImpl.delete(StatefulKnowledgeSessionImpl.java:1530)
	at org.drools.core.impl.StatefulKnowledgeSessionImpl.delete(StatefulKnowledgeSessionImpl.java:1521)

Comment 1 Mario Fusco 2015-03-05 15:53:28 UTC

Fixed by https://github.com/droolsjbpm/drools/commit/730120030

Comment 3 Mario Fusco 2015-03-10 18:44:02 UTC

Cherry-picked to 6.2.x branch with https://github.com/droolsjbpm/drools/commit/64b0db977

Comment 4 Marek Winkler 2015-03-26 15:39:05 UTC

Verified in BRMS 6.1.0 CR1.

Comment 5 JBoss JIRA Server 2015-07-01 18:12:07 UTC

Mario Fusco <mario.fusco> updated the status of jira DROOLS-731 to Resolved