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From Eric Wertman <wertm...@comcast.net>
Subject Re: FYI: jk 1.2.20 core on iSeries v5R3
Date Wed, 31 Jan 2007 21:26:41 GMT
Sorry to jump in, I'm new here.  I started watching this list because of 
a problem I'm having with the mod_jk 1.2.20 as well.  I'm not getting 
core files, but I do have problems that I can't reproduce at log level 
trace or debug.

I'm running it on AIX 5.3 (ml05).  I compiled the apache 2.2.4 and 
apr-1.2.8 along with the mod_jk, and using tomcat 5.5.20 with an IBM 1.5 
JRE.

I compiled them all using the IBM  cc_r compiler.  I've actually tried a 
number of different flags trying to resolve my problem, assuming 
initially that I was doing something incorrectly.  The behavior 
persists, though, and my compilations have all been clean.  Apache 
without mod_jk doesn't give me any problems.

Superficially it seems to work fine.  Once I run tests with ab, it 
starts to get a little ugly.  I get a number of failed requests, and 
these types of errors:



[Tue Jan 30 03:03:53 2007] [2203720:0000] [error] jk_ajp_common.c 
(1504): Unknown AJP protocol code: 41
[Tue Jan 30 03:03:53 2007] [2203720:0000] [error] jk_ajp_common.c (970): 
wrong message format 0x3837 from 127.0.0.1:8010
[Tue Jan 30 03:03:53 2007] [2203720:0000] [error] jk_ajp_common.c 
(1566): (PlatformServer) Tomcat is down or refused connection. No 
response has been sent to the client (yet)
[Tue Jan 30 03:03:53 2007] [2203720:0000] [info]  jk_ajp_common.c 
(1877): (PlatformServer) receiving from tomcat failed, recoverable 
operation attempt=0
[Tue Jan 30 03:03:53 2007] [2203720:0000] [info]  jk_ajp_common.c 
(1916): (PlatformServer) sending request to tomcat failed,  recoverable 
operation attempt=1
[Tue Jan 30 03:03:53 2007] [2203720:0000] [info]  jk_ajp_common.c 
(1842): (PlatformServer) request failed, because of server error without 
recovery in send loop attempt=0
[Tue Jan 30 03:03:53 2007] [2203720:0000] [info]  mod_jk.c (2142): 
Service error=-5 for worker=PlatformServer
[Tue Jan 30 03:03:53 2007] [2203720:0000] [info]  mod_jk.c (401): Write 
without start, starting with defaults
[Tue Jan 30 03:03:53 2007] [2203720:0000] [error] jk_ajp_common.c (970): 
wrong message format 0x031a from 127.0.0.1:8010
[Tue Jan 30 03:03:53 2007] [2203720:0000] [error] jk_ajp_common.c 
(1592): (PlatformServer) Tomcat is down or network problems. Part of the 
response has already been sent to the cli
ent
[Tue Jan 30 03:03:53 2007] [2203720:0000] [info]  jk_ajp_common.c 
(1877): (PlatformServer) receiving from tomcat failed, recoverable 
operation attempt=1
[Tue Jan 30 03:03:53 2007] [2203720:0000] [error] jk_ajp_common.c 
(1504): Unknown AJP protocol code: D8
[Tue Jan 30 03:03:53 2007] [2203720:0000] [info]  jk_ajp_common.c 
(1842): (PlatformServer) request failed, because of server error without 
recovery in send loop attempt=0
[Tue Jan 30 03:03:53 2007] [2203720:0000] [info]  mod_jk.c (2142): 
Service error=-5 for worker=PlatformServer
[Tue Jan 30 03:03:53 2007] [2203720:0000] [info]  jk_ajp_common.c 
(1916): (PlatformServer) sending request to tomcat failed,  recoverable 
operation attempt=2
[Tue Jan 30 03:03:53 2007] [2203720:0000] [error] jk_ajp_common.c (915): 
sendfull returned -14 with errno=14
[Tue Jan 30 03:03:53 2007] [2203720:0000] [error] jk_ajp_common.c (948): 
(PlatformServer) can't receive the response message from tomcat, network 
problems or tomcat is down (127.0.
0.1:8010), err=-9
[Tue Jan 30 03:03:53 2007] [2203720:0000] [error] jk_ajp_common.c 
(1566): (PlatformServer) Tomcat is down or refused connection. No 
response has been sent to the client (yet)
[Tue Jan 30 03:03:53 2007] [2203720:0000] [info]  jk_ajp_common.c 
(1877): (PlatformServer) receiving from tomcat failed, recoverable 
operation attempt=0
[Tue Jan 30 03:03:53 2007] [2203720:0000] [error] jk_ajp_common.c 
(1292): (PlatformServer) failed resending request body (812760852)
[Tue Jan 30 03:03:53 2007] [2203720:0000] [info]  jk_ajp_common.c 
(1916): (PlatformServer) sending request to tomcat failed,  recoverable 
operation attempt=3
[Tue Jan 30 03:03:53 2007] [2203720:0000] [info]  jk_ajp_common.c 
(1916): (PlatformServer) sending request to tomcat failed,  recoverable 
operation attempt=1
[Tue Jan 30 03:03:53 2007] [2203720:0000] [error] jk_ajp_common.c (915): 
sendfull returned -9 with errno=9
[Tue Jan 30 03:03:53 2007] [2203720:0000] [info]  jk_ajp_common.c 
(1201): (PlatformServer) error sending request. Will try another pooled 
connection
[Tue Jan 30 03:03:53 2007] [2203720:0000] [error] jk_ajp_common.c (915): 
sendfull returned -14 with errno=14
[Tue Jan 30 03:03:53 2007] [2203720:0000] [error] jk_ajp_common.c (948): 
(PlatformServer) can't receive the response message from tomcat, network 
problems or tomcat is down (127.0.

And these in the apache error_log:

[Tue Jan 30 03:02:28 2007] [info] Shared memory session cache initialised
[Tue Jan 30 03:02:28 2007] [info] Init: Initializing (virtual) servers 
for SSL
[Tue Jan 30 03:02:28 2007] [info] Server: Apache/2.2.4, Interface: 
mod_ssl/2.2.4, Library: OpenSSL/0.9.8d
[Tue Jan 30 03:02:28 2007] [notice] Apache/2.2.4 (Unix) mod_jk/1.2.20 
mod_ssl/2.2.4 OpenSSL/0.9.8d configured -- resuming normal operations
[Tue Jan 30 03:02:28 2007] [info] Server built: Jan 29 2007 23:44:30
[Tue Jan 30 03:02:28 2007] [debug] worker.c(1740): AcceptMutex: sysvsem 
(default: sysvsem)
[Tue Jan 30 03:03:54 2007] [notice] child pid 2203720 exit signal 
Segmentation fault (11)
[Tue Jan 30 03:04:00 2007] [debug] worker.c(1083): the listener thread 
didn't exit
[Tue Jan 30 03:04:01 2007] [debug] worker.c(1083): the listener thread 
didn't exit
[Tue Jan 30 03:04:13 2007] [debug] worker.c(1354): taking over 
scoreboard slot from 1552520 (quiescing)
[Tue Jan 30 03:04:19 2007] [notice] child pid 2576392 exit signal 
Segmentation fault (11)
[Tue Jan 30 03:04:23 2007] [notice] child pid 2310294 exit signal 
Segmentation fault (11)
[Tue Jan 30 03:04:26 2007] [notice] child pid 2576394 exit signal 
Segmentation fault (11)
[Tue Jan 30 03:29:30 2007] [notice] child pid 1552524 exit signal 
Segmentation fault (11)
[Tue Jan 30 04:09:22 2007] [notice] child pid 2584796 exit signal 
Segmentation fault (11)


Again,  I thought I would be able to track them down by changing the log 
level to "trace", but the problem disappears at that log level.  I had 
assumed it was slowing the connection rate down enough to mitigate the 
problem.  Not sure if any of that helps.. if you can help me or want 
more info let me know.

Thanks!

Eric

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