[jboss-jira] [JBoss JIRA] (JBRULES-3692) Real-time planning: memory leak when calling addProblemFactChange(ProblemFactChange)

Real-time planning: memory leak when calling addProblemFactChange(ProblemFactChange) ------------------------------------------------------------------------------------ Key: JBRULES-3692 URL: https://issues.jboss.org/browse/JBRULES-3692 Project: Drools Issue Type: Bug Security Level: Public(Everyone can see) Components: drools-planner Affects Versions: 5.5.0.Final Reporter: Radovan Synek Assignee: Geoffrey De Smet Priority: Critical When using Planner with DroolsScoreDirector, after each problem fact change, number of planning entity instances increases. Steps to reproduce: 1. open cloud balance example with GUI, choose the largest input 2. start solving the problem 3. delete some of the listed computers - to make the fact change (for me, 5 computers in a 5 seconds are enough) 4. take a heapdump (I used jmap -dump:live,file=... to enforce GC first) 5. open visualvm or similar tool and look for the planning entity class 6. repeat 3. - 5. several times, you should see increasing number of planning entity instances Also, there is a rule base holding sessions under the Planner API - and number of sessions also increases in time (these sessions reference to planning entity instances). Steps to reproduce: 1. open the last heapdump in similar tool and look for ReteooRuleBase. 2. the rule base holds ObjectHashSet with stateful sessions in its entries 3. you should see a different number of these session in every heapdump taken in previous recipe