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From Eric Wertman <wertm...@comcast.net>
Subject Re: [users@httpd] Apache returns empty file, reports 200 and correct file size
Date Thu, 01 Mar 2007 07:27:19 GMT
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<font size="-1"><font face="Tahoma">That's pretty close.&nbsp; I did some
further testing and found that the file wasn't always empty, sometimes
the contents were junk that looked like memory overflow from somewhere
else.&nbsp; I was using mod_mem_cache, and I thought I had disabled it at
one point in my testing.&nbsp; <br>
<br>
I seem to have cleared the problem, by switching from mod_jk to
mod_proxy_ajp.&nbsp; It's funny that they are so closely related though.&nbsp; I
wonder if the real issue isn't in apr or somewhere else.<br>
</font></font><br>
Xuekun Hu wrote:
<blockquote
 cite="mid398d69300702281834y25928f03p73b5d8819a395d39@mail.gmail.com"
 type="cite">did you use mod_mem_cache? If yes, you probably met this
issue :
  <br>
<a class="moz-txt-link-freetext" href="http://issues.apache.org/bugzilla/show_bug.cgi?id=41551">http://issues.apache.org/bugzilla/show_bug.cgi?id=41551</a>
  <br>
  <br>
  <br>
On 3/1/07, Eric Wertman <a class="moz-txt-link-rfc2396E" href="mailto:wertmane@comcast.net">&lt;wertmane@comcast.net&gt;</a>
wrote:
  <br>
  <blockquote type="cite">I'm running a self-compiled set of binaries
on an x86_64 2.4 kernel.&nbsp; My
    <br>
setup appears to be working completely fine, but occasionally I get a
    <br>
broken image or script.&nbsp; After doing some digging, I've determined that
    <br>
apache is sending me an empty file, but reporting a correct response.
    <br>
    <br>
I found some discussion of a similar situation regarding apr-1 and
    <br>
sendfile64(), but that appeared to be an all or nothing situation,
where
    <br>
my problem is much more infrequent, less than .1% of my total requests
    <br>
probably.
    <br>
    <br>
This may belong on the developer's list, but I thought I'd start with
    <br>
the user community to see if anyone else had seen similar issues.&nbsp; I'm
    <br>
using a stack of software:
    <br>
    <br>
Red Hat EL 3
    <br>
apr-1.2.8
    <br>
apache 2.2.4
    <br>
mod_jk 1.2.28
    <br>
tomcat 5.5
    <br>
    <br>
Since I'm not getting any errors, and apache is reporting the correct
    <br>
file size, I don't suspect the module so much as apache, apr, or some
    <br>
other configuration issue that I'm missing.&nbsp; Is it possible that
    <br>
something at the system level is stopping the data?
    <br>
    <br>
Thanks in advance for your help!
    <br>
    <br>
Eric
    <br>
    <br>
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