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Subject DO NOT REPLY [Bug 53022] New: session is expired/removed/not found by unknown reason
Date Mon, 02 Apr 2012 02:46:57 GMT

             Bug #: 53022
           Summary: session is expired/removed/not found by unknown reason
           Product: Tomcat 7
           Version: 7.0.26
          Platform: PC
        OS/Version: Windows XP
            Status: NEW
          Severity: critical
          Priority: P2
         Component: Catalina
    Classification: Unclassified

Created attachment 28526
Effect described Tomcat 7.0.26


I was running some performance tests across multiple frameworks with Tomcat and
I just found a issue with the session management. 

The test try to run tomcat with low memory (-Xms32m -Xmx32m -server) and put it
to stress, to see how the garbage collector (GC) handles the load.

I tried the same tests with 7.0.23 without problem, but when I changed to
7.0.26, I notice the server in one moment cannnot found the session and makes
my test load fail. I use jmeter for the load and I can see for some time how
the test start to fail. But new request continues hitting the server creating
new session, but in that case those sessions does not fail, so again it
continues for other time. 

I run tests with different frameworks, and in each framework the response is
different but the problem is the same: a request try to get a session that
should exists, then the session is not found and the code fails.

Could you guys review the changes done between 7.0.23 and 7.0.26 to see if
there is some problem?

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