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From bugzi...@apache.org
Subject DO NOT REPLY [Bug 21768] New: - mod_jk 1 & 2 round robin bug with prefork Apache (1.3 & 2.0 default)
Date Mon, 21 Jul 2003 14:23:34 GMT
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http://nagoya.apache.org/bugzilla/show_bug.cgi?id=21768

mod_jk 1 & 2 round robin bug with prefork Apache (1.3 & 2.0 default)

           Summary: mod_jk 1 & 2 round robin bug with prefork Apache (1.3 &
                    2.0 default)
           Product: Tomcat 4
           Version: 4.1.24
          Platform: PC
        OS/Version: Linux
            Status: NEW
          Severity: Critical
          Priority: Other
         Component: Connector:Coyote JK 2
        AssignedTo: tomcat-dev@jakarta.apache.org
        ReportedBy: simon.pabst@web.de


Setup:
One Apache with mod_jk load balancer (sticky sessions on) in front
Eight Tomcats in back

Round Robin doesn't work, but instead the Users are distributed on the Tomcats
like this:

Tomcat No.| User Count (approx. daily)
T1              70
T2              30
T3              15
T4              6
T5              1
T6              0
T7              0
T8              0

This occurs both with Apache1.3.27/mod_jk1.2.x and Apache2.0.45/mod_jk2.x
(mpm=prefork (default))
(mod_jk 1 and 2 built from source of jakarta-tomcat-connectors-4.1.24-src and
later also of tomcat-connectors-1.1M1-src).

With Apache2 and --with-mpm=worker round robin works fine.


Unless this is fixed, at least please put a big warning in the JK docs.
(spent lots of hours on this because i thought the fault is somewhere in my
configuration)


See also this thread:
http://www.mail-archive.com/tomcat-user@jakarta.apache.org/msg97638.html

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