Bug 182670 ScriptedDataSet does not use the same classloader when ran for Parameters than when ran for the report
viewer/org.eclipse.birt.report.viewer/birt/WEB-INF/classes/org/eclipse/birt/report/utility/BirtUtility.java
{
				map.remove( taskid );
			}
		}
		catch ( Exception e )
		{
		}
	}
	/**
	 * Cancel the current engine task by task id
	 * 
	 * @param request
	 * @param taskid
	 * @throws Exception
	 */
	public static void cancelTask( HttpServletRequest request, String taskid )
			throws Exception
	{
		if ( taskid == null )
			return;
		
		HttpSession session = request.getSession( );
		if ( session == null )
			return;
		Map map = (Map) session.getAttribute( IBirtConstants.TASK_MAP );
		if ( map != null && map.containsKey( taskid ) )
		{
			BaseTaskBean bean = (BaseTaskBean) map.get( taskid );
			if ( bean == null )
				return;