Link: Added: This issue depends JBPORTAL-2470

There is no need to back port to any portal version.  The fix will go to EPP 4.3-CP03 branch only. There's no dependence on the JBPORTAL-2470.  And here is the description of this issue.

 If a user name contains underscore, for example "john_dow", it breaks the UsersActivityStatsService MBean sevice.

This is the code from UsersActivityStatsServiceImpl:

 public void registerActivity(final UserActivity userActivity)
   {
      try
      {
         Notification notification = new Notification(Integer.toString(userActivity.getType()), this.getServiceName(),
               userActivity.getTimestamp(), userActivity.getTimestamp(), userActivity.getId() + "_"
                     + userActivity.getSessionId());
     ....
  
And here is the code from UserActivity:

public UserActivity(Notification notification)
   {
      if (notification.getMessage() == null)
      {
         throw new IllegalArgumentException("Id (notification message) cannot be null");
      }
      this.id = notification.getMessage().substring(0, notification.getMessage().indexOf("_"));
      this.sessionId = notification.getMessage().substring(notification.getMessage().indexOf("_"));
      this.timestamp = notification.getTimeStamp();
      this.type = Integer.parseInt(notification.getType());
   }
 
 

Link: Removed: This issue depends JBPORTAL-2470 

issue has been resolved.

Link: Added: This issue related JBEPP-159

This fix has been committed to EPP 4.3 branch that will be picked up by next CP release.