[rules-users] ConsequenceInvokers building up in heap

[toddp2]

I am currently using drools in a project and I am finding that my heap is
accumulating (and seemingly not releasing) several ConsequenceInvoker
classes.  I have done a search on possible causes but have not found much
regarding this issue.  Below is an excerpt of the code that runs the rules
engine.  I have checked that the code deregisters the execution set and
closes the rulesession, is there anything else that it needs to do to
release resources?

Thanks,

Todd

try
   {
       RuleExecutionSet rexeSet = null;
       StatelessRuleSession ruleSession = null;

       rexeSet = _localRuleExeSetProvider.createRuleExecutionSet(strReader,
properties);
       uidName = new UID();//use a unique name for this rule set each time
through

       _ruleAdmin.registerRuleExecutionSet(uidName.toString(), rexeSet,
null);

       ruleSession =
(StatelessRuleSession)_ruleRunTime.createRuleSession(uidName.toString(),
null, RuleRuntime.STATELESS_SESSION_TYPE);

      //execute the rules and facts
      listRetDrools = (List)ruleSession.executeRules(listFacts);

     }
     catch(Exception e){
	_log.fatal("Rule Engine execution error!", e);
	throw new
RuleEngineException(RuleEngineErrorType.RULEENGINE_EXECUTION_ERROR, e);
     }
    finally {
       //release the rule session
       if (ruleSession != null)   {
          try	{
              ruleSession.release();
             _log.info("Released the rule session.");
          }
          catch(Exception e)  {
             _log.fatal("Rule Engine execution cleanup error!", e);
             throw new
RuleEngineException(RuleEngineErrorType.RULEENGINE_EXECUTION_CLEANUP_ERROR,
e);
          }
       }
       else
           _log.info("No rule session to release.");
       //deregister the execution set
       if (rexeSet != null && uidName != null)  {
          try   {
	_ruleAdmin.deregisterRuleExecutionSet(uidName.toString(), null);
          }
          catch(Exception e)
          {
             _log.fatal("Rule Execution Set deregistration error!", e);
          throw new
RuleEngineException(RuleEngineErrorType.RULEENGINE_EXECUTION_CLEANUP_ERROR,
e);
           }
      }
     else
         _log.info("No rule execution set to deregister.");
      //close our rule reader
      if (strReader != null){
	strReader.close();
	_log.info("Closed the rule stream.");
      }
       //close our dsl reader...
      if (strDSLReader != null)	{
	strDSLReader.close();
	_log.info("Closed the DSL stream.");
      }
  }
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