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Posted to bugs@httpd.apache.org by bu...@apache.org on 2015/08/24 12:02:30 UTC
[Bug 58278] New: apache - mod_security Issue : apache no releasing
Threads in "w" state even after stopping application's tomcat
https://bz.apache.org/bugzilla/show_bug.cgi?id=58278
Bug ID: 58278
Summary: apache - mod_security Issue : apache no releasing
Threads in "w" state even after stopping application's
tomcat
Product: Apache httpd-2
Version: 2.4.12
Hardware: PC
Status: NEW
Severity: normal
Priority: P2
Component: All
Assignee: bugs@httpd.apache.org
Reporter: prem.masarani@highq.com
Created attachment 33032
--> https://bz.apache.org/bugzilla/attachment.cgi?id=33032&action=edit
server status with all threads in stuck in "w" state
We have two application on different tomcats and both the applications
interacts through apache.
Apache is configured with mod_security rules.
In this setup I have faced two scenario:
Scenario 1:
---------------
First application is requesting second for any resource (e.g. any document).
In this case apache is taking more time in sending request to the second
application's tomcat.
As we have noticed sometimes it is taking around 30 sec to send request to the
second application's tomcat.
Due to this, response time is exceeding the the Read time out time set for the
request.
And On removing mod_security form apache we haven't faced this type of issue.
Scenario 2:
---------------
When scenario 1 occurs we have multiple requests that is waiting long for it's
response.
On checking apache's server-status we found most of the worker threads in "W"
Sending Reply state.
And keep on increasing worker threads in "W" state.
This leads to a situation where the no. of request exceeds the number of worker
threads in the server process since multiple threads are in their waiting
state.
Please find attachment-screenshot of apache server-status
where all apache's working thread in "W" Sending Reply state.
And the strange thing is that even after stopping both application's tomcats
their still exists threads in "W" Sending Reply state in apache's
server-status.
It releases only after restarting apache.
We are facing this issue after updating from 2.4.10 to apache 2.4.12 or 2.4.16.
Haven't faced this scenario upto apache 2.4.10.
And On removing mod_security form apache we haven't faced this type of scenario
as well.
For now, we have given solution by just removing mod_security when both
application interact with each other.
But this does'nt seems a feasible solution as its working fine in apache
2.4.10.
Please suggest for this odd behave of apache 2.4.12 or 2.4.16 with mod_security
or reason for this.
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[Bug 58278] apache - mod_security Issue : apache no releasing
Threads in "w" state even after stopping application's tomcat
Posted by bu...@apache.org.
https://bz.apache.org/bugzilla/show_bug.cgi?id=58278
prem <pr...@highq.com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Priority|P2 |P1
Severity|normal |blocker
OS| |All
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[Bug 58278] apache - mod_security Issue : apache no releasing
Threads in "w" state even after stopping application's tomcat
Posted by bu...@apache.org.
https://bz.apache.org/bugzilla/show_bug.cgi?id=58278
Eric Covener <co...@gmail.com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Resolution|--- |INVALID
Status|NEEDINFO |RESOLVED
--- Comment #3 from Eric Covener <co...@gmail.com> ---
No followup in several months. If there's still some curiosity about what the
server was doing in this state, re-open with periodic backtraces of the running
process. Discussion to users@httpd.apache.org.
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[Bug 58278] apache - mod_security Issue : apache no releasing
Threads in "w" state even after stopping application's tomcat
Posted by bu...@apache.org.
https://bz.apache.org/bugzilla/show_bug.cgi?id=58278
Suzanne <Sc...@icloud.com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEEDINFO |NEW
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[Bug 58278] apache - mod_security Issue : apache no releasing
Threads in "w" state even after stopping application's tomcat
Posted by bu...@apache.org.
https://bz.apache.org/bugzilla/show_bug.cgi?id=58278
Yann Ylavic <yl...@gmail.com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |NEEDINFO
--- Comment #2 from Yann Ylavic <yl...@gmail.com> ---
Please don't change the Status without providing more info, we NEEDINFO.
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[Bug 58278] apache - mod_security Issue : apache no releasing
Threads in "w" state even after stopping application's tomcat
Posted by bu...@apache.org.
https://bz.apache.org/bugzilla/show_bug.cgi?id=58278
Marcos Fernando <ma...@copagril.com.br> changed:
What |Removed |Added
----------------------------------------------------------------------------
OS|All |Linux
Version|2.4.12 |2.4.6
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[Bug 58278] apache - mod_security Issue : apache no releasing
Threads in "w" state even after stopping application's tomcat
Posted by bu...@apache.org.
https://bz.apache.org/bugzilla/show_bug.cgi?id=58278
Yann Ylavic <yl...@gmail.com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |NEEDINFO
--- Comment #1 from Yann Ylavic <yl...@gmail.com> ---
Please provide some error log (preferably at DEBUG or TRACE level) whith the
issue reproduced.
It's not clear whether it comes from mod_security or httpd.
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[Bug 58278] apache - mod_security Issue : apache no releasing
Threads in "w" state even after stopping application's tomcat
Posted by bu...@apache.org.
https://bz.apache.org/bugzilla/show_bug.cgi?id=58278
Marcos Fernando <ma...@copagril.com.br> changed:
What |Removed |Added
----------------------------------------------------------------------------
OS|Linux |All
Status|NEEDINFO |NEW
Version|2.4.6 |2.4.12
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[Bug 58278] apache - mod_security Issue : apache no releasing
Threads in "w" state even after stopping application's tomcat
Posted by bu...@apache.org.
https://bz.apache.org/bugzilla/show_bug.cgi?id=58278
Yann Ylavic <yl...@gmail.com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |ylavic.dev@gmail.com
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[Bug 58278] apache - mod_security Issue : apache no releasing
Threads in "w" state even after stopping application's tomcat
Posted by bu...@apache.org.
https://bz.apache.org/bugzilla/show_bug.cgi?id=58278
prem <pr...@highq.com> changed:
What |Removed |Added
----------------------------------------------------------------------------
OS| |Windows 7
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[Bug 58278] apache - mod_security Issue : apache no releasing
Threads in "w" state even after stopping application's tomcat
Posted by bu...@apache.org.
https://bz.apache.org/bugzilla/show_bug.cgi?id=58278
Yann Ylavic <yl...@gmail.com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |NEEDINFO
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