Queries Executed while Rules are Firing Causes Exceptions --------------------------------------------------------- Key: JBRULES-1432 URL: http://jira.jboss.com/jira/browse/JBRULES-1432 Project: JBoss Drools Issue Type: Bug Security Level: Public (Everyone can see) Components: Reteoo Affects Versions: 4.0.4 Environment: Sun 1.5.0_04 Windows Reporter: Steve Shabino We have a stateful WM into which we periodically (1) insert new facts and fire rules, and (2) execute queries. Drools fails when we allow query execution in another thread during fireAllRules(). Set-up: - Every 10 seconds, Thread A inserts some facts and calls fireAllRules(). fireAllRules() is never called concurrently with itself. - Thread B executes many getQueryResults() calls in series (no concurrency in query execution) Our rule base uses shadow facts for all facts and is set up this way: conf.setAssertBehaviour(RuleBaseConfiguration.AssertBehaviour.EQUALITY); conf.setRemoveIdentities(true); conf.setLogicalOverride(RuleBaseConfiguration.LogicalOverride.DISCARD); conf.setMaintainTms(true); conf.setShadowProxy(true); We are making some use of insertLogical(). Expected: - Queries are run against the last consistent truth state, even while fireAllRules() is running. Actual Behavior: We get this exception: Caused by: java.lang.RuntimeException: Unable to pop at org.drools.util.PrimitiveLongStack.pop(PrimitiveLongStack.java:63) at org.drools.common.AbstractFactHandleFactory.newFactHandle(AbstractFactHandleFactory.java:44) at org.drools.reteoo.ReteooWorkingMemory.getQueryResults(ReteooWorkingMemory.java:90) This bug occurs under 4.04 and 4.1 Trunk as of 1/22. Please let us know if we can provide additional information. -- This message is automatically generated by JIRA. - If you think it was sent incorrectly contact one of the administrators: http://jira.jboss.com/jira/secure/Administrators.jspa - For more information on JIRA, see: http://www.atlassian.com/software/jira