java - Concurrent HTTP Session is returning wrong user -


i experiencing quite weird problem. when 2 users logging @ exact same time, 1 of them detected other.

    locale = new locale(getlocale(request).getlanguage(), getlocale(request).getcountry());       strremoteuser = webtools.getuseridwithoutdomainname(request.getremoteuser()).touppercase();      logger.info("[myapp] user " + strremoteuser + " logging in");      logger.info("[myapp] creating session : " + strremoteuser);      httpsession session = request.getsession(false);      if (session != null) {          session.invalidate();         session = request.getsession();     }             logger.info("[myapp] user in session : " + strremoteuser);

what following. let's assume 2 users (usr001 , usr002) logging application @ same exact time. located in different location.

logs:

    2013-05-14 08:19:38,550 info  [com.myapp.action.common.loginaction] [myapp] user usr001 logging in 2013-05-14 08:19:38,551 info  [com.myapp.action.common.loginaction] [myapp] creating session : usr001 2013-05-14 08:19:38,760 info  [com.myapp.action.common.loginaction] [myapp] user usr002 logging in 2013-05-14 08:19:38,761 info  [com.myapp.action.common.loginaction] [myapp] creating session : usr002 2013-05-14 08:19:38,834 info  [com.myapp.action.common.loginaction] [myapp] user in session : usr002 2013-05-14 08:19:39,104 info  [com.myapp.action.common.loginaction] [myapp] user in session : usr002 2013-05-14 08:19:39,425 info  [com.myapp.action.common.loginaction] [myapp] auto added user usr002 2013-05-14 08:19:39,550 info  [com.myapp.action.common.loginaction] [myapp] setting user in session: usr002 (673)

as can see, usr002 "wins" concurrent session creation usr001 recognized usr002. if usr001 logs out , log in, works properly.

any thoughts/advice?

thank help.

specs:

  • jboss 4.2.3ga
  • postgresql 9.0.3
  • struts 1.3.5
  • ejb3

i glad helped. here's comment posted answer : these classic concurrency issues, if talking same thing. move variable method , run again , @ output.


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