[jboss-jira] [JBoss JIRA] (JBRULES-3075) window:length windows retaining events when they shouldnt

window:length windows retaining events when they shouldnt --------------------------------------------------------- Key: JBRULES-3075 URL: https://issues.jboss.org/browse/JBRULES-3075 Project: Drools Issue Type: Bug Security Level: Public(Everyone can see) Components: drools-core (fusion) Affects Versions: 5.2.0.CR1 Environment: win64, jdk 6u24 Reporter: Radai Rosenblatt Assignee: Mark Proctor Attachments: drools length window bug.zip using the following DRL: package contrived.example import contrived.example.EventWithTimestamp declare EventWithTimestamp @role(event) @duration( duration ) @timestamp( timestamp ) end rule "no event in window" when not EventWithTimestamp (someProp=="whatever") over window:length(3) from entry-point "Event Stream" then System.err.println("retract"); end if we start with an initial matching (someProp=="whatever") event and fire a long sequence of non-matching events: {"something else", "something else" ... "something else"} the rule should fire sometime into the long chain of "something else" events (it should fire after the 3rd such event - when the window contains 3 non-matching events and the 1st matching event has been pushed out). in practice the rule never fires. worse, it also retains all the events in memory when it should only keep the last 3. to reproduce the issue, simply build the attached maven project (mvn clean install)