Memory leak in release 4.0.2 ---------------------------- Key: JBRULES-1279 URL: http://jira.jboss.com/jira/browse/JBRULES-1279 Project: JBoss Drools Issue Type: Bug Security Level: Public (Everyone can see) Affects Versions: 4.0.2 Environment: tested with windows jdk5 and jdk6 Reporter: Paul Jackson Assigned To: Mark Proctor I have observed memory leaks in our application after upgrading to the latest 4.0.2 release. I have replicated the problem with the sample code below: DroolsTest.java import java.io.InputStreamReader; import java.io.Reader; import org.drools.RuleBase; import org.drools.RuleBaseFactory; import org.drools.StatefulSession; import org.drools.compiler.PackageBuilder; import org.drools.rule.Package; public class DroolsTest { public void run() throws Exception { RuleBase ruleBase = createRuleBase(); long counter = 0; while(true) { StatefulSession session = ruleBase.newStatefulSession(false); if(++counter % 100 == 0) { System.out.println(counter); } session.dispose(); } } private RuleBase createRuleBase() throws Exception { Reader source = new InputStreamReader( this.getClass().getResourceAsStream( "HelloWorld.drl" ) ); PackageBuilder builder = new PackageBuilder(); builder.addPackageFromDrl( source ); if ( builder.hasErrors() ) { System.out.println( builder.getErrors().toString() ); throw new RuntimeException( "Unable to compile \"HelloWorld.drl\"."); } Package pkg = builder.getPackage(); RuleBase ruleBase = RuleBaseFactory.newRuleBase(); ruleBase.addPackage( pkg ); return ruleBase; } public static void main(String[] args) throws Exception { new DroolsTest().run(); } } HelloWorld.drl #list any import classes here. #declare any global variables here rule "Your First Rule" when #conditions then #actions end rule "Your Second Rule" #include attributes such as "salience" here... when #conditions then #actions end When I run this with release 4.0.1 I have to manually break the program to get it to stop. When I run with release 4.0.2 it reaches about 14000 iterations before crashing with an out of memory error. -- 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