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From "Durk Strooisma" <d...@kern.nl>
Subject Re: FW: question regarding 'mod_jk: error flushing'
Date Wed, 01 Nov 2006 09:46:10 GMT
> Hi Durk,
>
> are you really talking about mod_jk?

Yep, the package "apache2-jakarta-tomcat-connectors" contains (from the
included README file):
1. mod_jk + Ajp13Connector
2. mod_jk2 + CoyoteConnector + JkCoyoteHandler
3. mod_webapp + WarpConnector

2 is experimental, 3 is deprected, we're using option 1; mod_jk.

> If yes: which version of nod_jk
> are  you using? It would be nice, if you could check version 1.2.19.

It was kinda hard to figure out the version... I've grepped in
/usr/lib/apache2/mod_jk.so for '1.2', and it came up with "1.2.6-dev".

Source for the "apache2-jakarta-tomcat-connectors" package was a tarball
called "jakarta-tomcat-connectors-4.1.30-src.tar.gz". 4.1.30 seems to be the
version of connector bundle. I found the jk-version in
jakarta-tomcat-connectors-4.1.30-src/jk/native/common/jk_version.h, which
shows: 1.2.6, just as expected.

Replacing this version with 1.2.9 isn't quite easy considering maintenance.
The version that came with the SUSE-distribution ensures
stability/compatibility (at least I may hope so considering it's an
enterprise grade distro) and is easier maintainable (security updates just
come with the update tool).

Well, I COULD do some tests with other versions of mod_jk on the testing
system, but as long as the issue doesn't harm the functionality of the web
applications, I'm hesitating a little in investing my time and downtime of
the system.

But then again, IF a new version of mod_jk would eliminate the error
messages, we still don't know why or what it actually was.

Durk

>
> Regards,
>
> Rainer
>
> Durk Strooisma wrote:
>> Hi all!
>>
>> I'm wondering the same.
>>
>> I've got four servers (two production machines and their testing
>> counter parts) running SUSE Linux Enterprise Server 9 with Apache 2,
>> Tomcat 5, and ModJK. Below the relevant packages are shown:
>>
>> apache2                           2.0.49-27.59
>> apache2-prefork                   2.0.49-27.59
>> apache2-jakarta-tomcat-connectors 5.0.19-29.1
>> jakarta-tomcat                    5.0.19-29.1
>>
>> Since June 2006 I'm getting lots of "mod_jk: Error flushing \n" on one
>> production system (and its testing system as well), but everything
>> seems to work fine... The other production system isn't affected.
>>
>> It's kind of annoying that there's no timestamp shown in the error
>> message. Debugging is really tough this way. I'm wondering what it
>> means and whether it's harmless or not. Like Kevin states, nowhere on
>> the internet this question seems to answered.
>>
>> Thanks in advance!
>>
>> Durk
>>
>>
>>>Hello there,
>>>
>>>Does anyone know what is this 'mod_jk: error flushing' about? I am
>>>using Tomcat 5.0, Apache and Mod_JK in production environment and keep
>>>getting this error in error log. I do google search and find lots of
>>>persons asking this question but no answer. Can anybody having
>>>experience with this shed a light on what it might be and how to
>>>resolve it?
>>>
>>>Thanks a lot,
>>>
>>>Kevin Song
>>
>>
>>
>>
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>
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