[jboss-jira] [JBoss JIRA] Updated: (JBRULES-1279) Memory leak in release 4.0.2

[Edson Tirelli (JIRA)]

     [ http://jira.jboss.com/jira/browse/JBRULES-1279?page=all ]

Edson Tirelli updated JBRULES-1279:
-----------------------------------

    Fix Version/s: 4.0.2_SOA_4.2-CP1
                   4.0.3
                   4.1.0

> 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: Edson Tirelli
>             Fix For: 4.0.3, 4.1.0, 4.0.2_SOA_4.2-CP1
>
>
> 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.

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