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From Brett Delle Grazie <brett.dellegra...@intact-is.com>
Subject unusual mod_jk 1.2.30 log messages
Date Thu, 02 Sep 2010 11:39:31 GMT
Hi,

We're having some strange errors being reported in the 1.2.30 version of
mod_jk.  We think they might be related to the performance issues we're
experiencing under load.

OS: RHEL 5.5 (fully patched)
Apache HTTPD: 2.2.3 (from OS vendor)
mod_jk: 1.2.30 (downloaded from Tomcat site and compiled locally)
Tomcat: 6.0.29 (binary distribution from apache.org)
JVM: 1.6.0_21 (Sun, 64-bit).

A sample is below. I'm mostly concerned about the 'awaited reply cpong
recieved 3 instead' and the subsequenct close  and failure to send
request.

Has anyone seen this before?

[Thu Sep 02 07:22:47.508 2010] [31759:47279871456000] [info]
init_jk::mod_jk.c (3189): mod_jk/1.2.30 initialized
[Thu Sep 02 07:22:47.588 2010] [31763:47279871456000] [info]
init_jk::mod_jk.c (3189): mod_jk/1.2.30 initialized
[Thu Sep 02 07:22:52.896 2010] [31781:1237244224] [warn]
ajp_handle_cping_cpong::jk_ajp_common.c (906): awaited reply cpong,
received 3 instead. Closing connection
[Thu Sep 02 07:22:52.896 2010] [31781:1237244224] [info]
ajp_send_request::jk_ajp_common.c (1518): (jvm2) failed sending request,
socket -1 prepost cping/cpong failure (errno=0)
[Thu Sep 02 07:22:59.647 2010] [31781:1258223936] [warn]
ajp_handle_cping_cpong::jk_ajp_common.c (906): awaited reply cpong,
received 3 instead. Closing connection
[Thu Sep 02 07:22:59.647 2010] [31781:1258223936] [info]
ajp_send_request::jk_ajp_common.c (1518): (jvm2) failed sending request,
socket -1 prepost cping/cpong failure (errno=0)
[Thu Sep 02 07:23:02.042 2010] [32082:1253792064] [warn]
ajp_handle_cping_cpong::jk_ajp_common.c (906): awaited reply cpong,
received 3 instead. Closing connection
[Thu Sep 02 07:23:02.042 2010] [32082:1253792064] [info]
ajp_send_request::jk_ajp_common.c (1518): (jvm2) failed sending request,
socket -1 prepost cping/cpong failure (errno=0)
[Thu Sep 02 07:23:06.142 2010] [32049:1325504832] [warn]
ajp_handle_cping_cpong::jk_ajp_common.c (906): awaited reply cpong,
received 3 instead. Closing connection
[Thu Sep 02 07:23:06.142 2010] [32049:1325504832] [info]
ajp_send_request::jk_ajp_common.c (1518): (jvm1) failed sending request,
socket -1 prepost cping/cpong failure (errno=0)
[Thu Sep 02 07:23:11.231 2010] [32082:1211832640] [info]
ajp_process_callback::jk_ajp_common.c (1882): Writing to client aborted
or client network problems
[Thu Sep 02 07:23:11.231 2010] [32082:1211832640] [info]
ajp_service::jk_ajp_common.c (2540): (jvm1) sending request to tomcat
failed (unrecoverable), because of client write error (attempt=1)
[Thu Sep 02 07:23:11.232 2010] [32082:1211832640] [info]
service::jk_lb_worker.c (1388): service failed, worker jvm1 is in local
error state
[Thu Sep 02 07:23:11.232 2010] [32082:1211832640] [info]
service::jk_lb_worker.c (1407): unrecoverable error 200, request failed.
Client failed in the middle of request, we can't recover to another
instance.
[Thu Sep 02 07:23:11.232 2010] [32082:1211832640] [info]
jk_handler::mod_jk.c (2611): Aborting connection for worker=balancer
[Thu Sep 02 07:23:11.444 2010] [32049:1315014976] [info]
ajp_process_callback::jk_ajp_common.c (1882): Writing to client aborted
or client network problems
[Thu Sep 02 07:23:11.444 2010] [32049:1315014976] [info]
ajp_service::jk_ajp_common.c (2540): (jvm1) sending request to tomcat
failed (unrecoverable), because of client write error (attempt=1)
[Thu Sep 02 07:23:11.445 2010] [32049:1315014976] [info]
service::jk_lb_worker.c (1388): service failed, worker jvm1 is in local
error state
[Thu Sep 02 07:23:11.445 2010] [32049:1315014976] [info]
service::jk_lb_worker.c (1407): unrecoverable error 200, request failed.
Client failed in the middle of request, we can't recover to another
instance.
[Thu Sep 02 07:23:11.445 2010] [32049:1315014976] [info]
jk_handler::mod_jk.c (2611): Aborting connection for worker=balancer
[Thu Sep 02 07:23:11.645 2010] [32082:1232812352] [info]
ajp_process_callback::jk_ajp_common.c (1882): Writing to client aborted
or client network problems
[Thu Sep 02 07:23:11.645 2010] [32082:1232812352] [info]
ajp_service::jk_ajp_common.c (2540): (jvm1) sending request to tomcat
failed (unrecoverable), because of client write error (attempt=1)
[Thu Sep 02 07:23:11.646 2010] [32082:1232812352] [info]
service::jk_lb_worker.c (1388): service failed, worker jvm1 is in local
error state
[Thu Sep 02 07:23:11.646 2010] [32082:1232812352] [info]
service::jk_lb_worker.c (1407): unrecoverable error 200, request failed.
Client failed in the middle of request, we can't recover to another
instance.
[Thu Sep 02 07:23:11.646 2010] [32082:1232812352] [info]
jk_handler::mod_jk.c (2611): Aborting connection for worker=balancer
[Thu Sep 02 07:23:17.902 2010] [31927:1298282816] [warn]
ajp_handle_cping_cpong::jk_ajp_common.c (906): awaited reply cpong,
received 3 instead. Closing connection
[Thu Sep 02 07:23:17.902 2010] [31927:1298282816] [info]
ajp_send_request::jk_ajp_common.c (1518): (jvm1) failed sending request,
socket -1 prepost cping/cpong failure (errno=0)
[Thu Sep 02 07:23:17.902 2010] [31927:1298282816] [info]
ajp_send_request::jk_ajp_common.c (1574): (jvm1) all endpoints are
disconnected, detected by connect check (0), cping (1), send (0)
[Thu Sep 02 07:23:20.676 2010] [31927:1140934976] [warn]
ajp_handle_cping_cpong::jk_ajp_common.c (906): awaited reply cpong,
received 3 instead. Closing connection
[Thu Sep 02 07:23:20.676 2010] [31927:1140934976] [info]
ajp_send_request::jk_ajp_common.c (1518): (jvm2) failed sending request,
socket -1 prepost cping/cpong failure (errno=0)
[Thu Sep 02 07:23:29.280 2010] [31927:1182894400] [warn]
ajp_handle_cping_cpong::jk_ajp_common.c (906): awaited reply cpong,
received 3 instead. Closing connection
[Thu Sep 02 07:23:29.280 2010] [31927:1182894400] [info]
ajp_send_request::jk_ajp_common.c (1518): (jvm2) failed sending request,
socket -1 prepost cping/cpong failure (errno=0)
[Thu Sep 02 07:23:33.014 2010] [32082:1138403648] [info]
ajp_process_callback::jk_ajp_common.c (1882): Writing to client aborted
or client network problems
[Thu Sep 02 07:23:33.014 2010] [32082:1138403648] [info]
ajp_service::jk_ajp_common.c (2540): (jvm1) sending request to tomcat
failed (unrecoverable), because of client write error (attempt=1)
[Thu Sep 02 07:23:33.014 2010] [32082:1138403648] [info]
service::jk_lb_worker.c (1388): service failed, worker jvm1 is in local
error state
[Thu Sep 02 07:23:33.014 2010] [32082:1138403648] [info]
service::jk_lb_worker.c (1407): unrecoverable error 200, request failed.
Client failed in the middle of request, we can't recover to another
instance.
[Thu Sep 02 07:23:33.014 2010] [32082:1138403648] [info]
jk_handler::mod_jk.c (2611): Aborting connection for worker=balancer

The rest of the log continues in the same pattern albeit with higher
frequency as the load increases.

-- 
Best Regards,

Brett Delle Grazie

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