tomcat-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From bugzi...@apache.org
Subject DO NOT REPLY [Bug 48191] Problem with mod_jk 1.2.28 - Can not render up the page on browser after a long wait
Date Fri, 13 Nov 2009 11:27:11 GMT
https://issues.apache.org/bugzilla/show_bug.cgi?id=48191

--- Comment #2 from Rainer Jung <rainer.jung@kippdata.de> 2009-11-13 03:27:09 UTC ---
This looks like mod_jk received the full response from the backend and could
successfully send it to the client.

Unfortunately the problem you originally reported on the users list was very
different, namely you found an error in the jk log file:

[Tue Nov 03 11:03:07 2009] [12138:2537062720] [info]
ajp_connection_tcp_get_message::jk_ajp_common.c (1150):
(worker_portfolio_son1) can't receive the response header message from
tomcat, network problems or tomcat (172.23.17.37:8009) is down (errno=11)
[Tue Nov 03 11:03:07 2009] [12138:2537062720] [error]
ajp_get_reply::jk_ajp_common.c (1962): (worker_portfolio_son1) Tomcat is
down or refused connection. No response has been sent to the client (yet)
[Tue Nov 03 11:03:07 2009] [12138:2537062720] [info]
ajp_service::jk_ajp_common.c (2447): (worker_portfolio_son1) sending request
to tomcat failed (recoverable), (attempt=2) [Tue Nov 03 11:03:07 2009]
[12138:2537062720] [error] ajp_service::jk_ajp_common.c (2466):
(worker_portfolio_son1) connecting to tomcat failed. [Tue Nov 03 11:03:07
2009] worker_portfolio_son1 citibank-extranet-ru-test.civ-versicherung.de
244.108419 [Tue Nov 03 11:03:07 2009] [12138:2537062720] [info]
jk_handler::mod_jk.c (2615): Service error=0 for
worker=worker_portfolio_son1

Here errno=11 meens EAGAIN. You also originally reported that this problem
doesn't occur with version 1.2.26:

Working:
mod_jk 1.2.26:
Server version: Apache/2.0.46
Red Hat Enterprise Linux ES release 3 (Taroon Update 5) 32 bit

Broken:
mod_jk 1.2.28:
Server version: Apache/2.0.52
Red Hat Enterprise Linux ES release 4 (Nahant Update 8) 64 bit

Indeed the return code EAGAIN when reading from the backend socket was handled
in a special way until 1.2.26 and is no longer in 1.2.28. We removed tolerating
EAGAIN while reading from the backend:

http://svn.apache.org/viewvc/tomcat/connectors/trunk/jk/native/common/jk_connect.c?r1=705959&r2=705977&pathrev=802161&diff_format=h

EAGAIN should only be returned by read() when the socket is set to
non-blocking mode. I can't see why this should be the case for your
configuration.

To not confuse any longer:

Can you reproduce the problem under the following circumstances:

- no reply_timeout
- no coekcet_timeout
- with at least one line of "[error]" in the JK log

If so, what's the request, what's in the JK log, what's the config in that
case?

I actually don't care whether it's a PDF request or not as long as we know
what's being tested and the above conditions are met.

-- 
Configure bugmail: https://issues.apache.org/bugzilla/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are the assignee for the bug.

---------------------------------------------------------------------
To unsubscribe, e-mail: dev-unsubscribe@tomcat.apache.org
For additional commands, e-mail: dev-help@tomcat.apache.org


Mime
View raw message