mod_perl loses STDOUT in middle of request

Posted by puzzled72 on Server Fault See other posts from Server Fault or by puzzled72
Published on 2010-03-31T21:30:55Z Indexed on 2010/03/31 21:33 UTC
Read the original article Hit count: 755

Filed under:

apache

|

mod-perl

|

stdout

Hi,

I have been having this weird issue where mod_perl seems to lose STDOUT in the middle of the request. So far I have eliminated everything I could think of.

You might have seen this bug related to the following errors in error_log :

Apache2 IO flush: (103)
Apache2::RequestIO::read: (104)
Software caused connection abort

They are all the same error. It happens when the perl script running under mod_perl loses STDOUT when trying to print the result back to apache.

I only notice this error on my servers running the following:

(centos5.4) Perl 5.8.8-27 mod_perl 2.0.4-6 httpd 2.2.3-31 kernel-2.6.18-164.15.1

It's not the code This code has been working for months
It's not network related The browser gets the error response from apache.
It's not time related I get the error 15 or so seconds after I restart httpd
It's not idle httpd related I have tried reducing the min/max SpareServers to 1
It's not load related I get the error even if there are only 10 sessions on httpd
It's not related to the "fd < PERLIO_MAX_REFCOUNTABLE_FD" perl 5.8.8 bug I recompiled perl-5.8.8 with the patch mentioned here : https://bugzilla.redhat.com/show_bug.cgi?id=559832, same error.
It appeared sometime between December 2009 and February 2010 sorry I cannot be more specific

Anyone has any idea ? Anything that I have not tested ?

Really Puzzled!

© Server Fault or respective owner

Related posts about apache

Web site not responding

as seen on Super User - Search for 'Super User'
I have website working fine before. But now its not able to connect to the server(I believe that is the problem). But its strange that the message not able to connect to the server is not coming and its keep connecting... for infinite time. Here is the screenshot. Here are some of the useful… >>> More
SVN Error 403 Forbidden

as seen on Stack Overflow - Search for 'Stack Overflow'
I can't figure this out. I try to import a new project into a svn repository from Netbeans and get 403 Forbidden. I just setup svn on my serverbox today. I can get to it through a browser just fine, though its empty as I haven't imported my project yet. Apache's path for html files is /var/www I… >>> More
How can I setup dependencies for Axis2 / Axiom on Maven2

as seen on Stack Overflow - Search for 'Stack Overflow'
I've tried the following settings on pom.xml to use Axis2 wsdl2code: <dependencies> <dependency> <groupId>org.apache.axis2</groupId> <artifactId>axis2</artifactId> <version>1.5.1</version> </dependency> </dependencies> ... <build> … >>> More
Problem compiling hive with ant

as seen on Stack Overflow - Search for 'Stack Overflow'
I compiling with Solaris 10 SPARC, jdk 1.6 from Sun, Ant 1.7.1 from OpenCSW. I have no problem running hadoop 0.17.2.1 However, I have problem compiling/integrating hive with the error 'cannot find symbol', although I followed the tutorial. I have the hive source code from SVN exactly from tutorial… >>> More
War deployment error related to classloading

as seen on Stack Overflow - Search for 'Stack Overflow'
hello when i am deploying my war file and run it it will give error like org.springframework.instrument.classloading.tomcat.TomcatInstrumentableClassLoader Jan 6, 2011 3:16:04 PM org.apache.catalina.startup.HostConfig deployDescriptor INFO: Deploying configuration descriptor servlet.xml Jan… >>> More

Related posts about mod-perl

mod perl in apache 2.2 not parsing perl scripts

as seen on Server Fault - Search for 'Server Fault'
Hi, I've set up a fresh Apache 2.2.15 server on windows server 2008 R2 with mod_perl (mod perl v2.0.4 / perl v5.10.1). Mod_perl and Perl 5.10 has been installed and loaded without problems. However, despite my configuration, the mod_perl module is failing to recognize and execute my .pl file, instead… >>> More
No coverage for runtime with Devel::Cover and ModPerl::Registry

as seen on Stack Overflow - Search for 'Stack Overflow'
When I'm running Devel::Cover with ModPerl::Registry, I get no coverage info except for BEGIN blocks. When I'm running the same script with Devel::Cover from command line or as a CGI, everything works alright (obviously). How can I make Devel::Cover "see" my code being executed in the runtime? Here's… >>> More
Dumping mod_perlified variables--what's the local namespace?

as seen on Stack Overflow - Search for 'Stack Overflow'
I have a mod_perl script: use strict; use warnings FATAL => 'all'; use 5.010001; my $face = 'ugly'; use Data::Dump qq(pp); die pp($ModPerl::ROOT::ModPerl::Registry::C_3a_www_test_2epl::face); It dies undef at C:/www/test.pl line 8. I was expecting "ugly" at C:/www/test.pl line 8. If instead… >>> More
mod_perl loses STDOUT in middle of request

as seen on Server Fault - Search for 'Server Fault'
Hi, I have been having this weird issue where mod_perl seems to lose STDOUT in the middle of the request. So far I have eliminated everything I could think of. You might have seen this bug related to the following errors in error_log : Apache2 IO flush: (103) Apache2::RequestIO::read: (104) Software… >>> More
How can I install both mod-perl2 and mod-php5 on Ubuntu?

as seen on Server Fault - Search for 'Server Fault'
From Ubuntu's package libary, I find the two modules I need. However: mod-perl2 requires apache2-mpm-worker mod-php5 requires apache2-mpm-prefork The two apache modules are mutually exclusive and ask me to un-install the other in order to install each. Which means I can't get a server running… >>> More