[Bug 60944] New: Tomcat Production Issue connections in CLOSE_WAIT

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[Bug 60944] New: Tomcat Production Issue connections in CLOSE_WAIT

Bugzilla from bugzilla@apache.org
https://bz.apache.org/bugzilla/show_bug.cgi?id=60944

            Bug ID: 60944
           Summary: Tomcat Production Issue connections in CLOSE_WAIT
           Product: Tomcat 7
           Version: 7.0.39
          Hardware: Sun
                OS: Linux
            Status: NEW
          Severity: critical
          Priority: P2
         Component: Catalina
          Assignee: [hidden email]
          Reporter: [hidden email]
  Target Milestone: ---

I have Tomcat Server version: Apache Tomcat/7.0.39 running on Production
environment having at least ~100 users during the day totaling about 10-20K in
24 hours. I'm having issue from time to time and issue resolves when I restart
the server.

Upon checking netstat for the listening port, I see all the connections are in
CLOSE_WAIT. When this happens tomcat stops to serving any request and
application is not responsive. When I restart server, tomcat works and starts
taking traffic and all ports goes either ESTABLISHED or TIME_WAIT.

Below are the details

Server version: Apache Tomcat/7.0.39
Server built:   Mar 22 2013 12:37:24
Server number:  7.0.39.0
OS Name:        Linux
OS Version:     2.6.32-642.13.1.el6.x86_64
Architecture:   amd64
JVM Version:    1.8.0_111-b15
JVM Vendor:     Oracle Corporation

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[Bug 60944] Tomcat Production Issue connections in CLOSE_WAIT

Bugzilla from bugzilla@apache.org
https://bz.apache.org/bugzilla/show_bug.cgi?id=60944

--- Comment #1 from Violeta Georgieva <[hidden email]> ---
Hi,

You run 4 years old Tomcat version.
Is it possible to test with the latest Tomcat 7 release - 7.0.76?

Regards,
Violeta

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[Bug 60944] Tomcat Production Issue connections in CLOSE_WAIT

Bugzilla from bugzilla@apache.org
In reply to this post by Bugzilla from bugzilla@apache.org
https://bz.apache.org/bugzilla/show_bug.cgi?id=60944

--- Comment #2 from Adil A <[hidden email]> ---
It is production environment so I have to do it in QA,Cert and then PROD so if
it is confirmed its version issue I can change it.

I also had same issue in tomcat 8 version in other prod environment we have and
below is the version I'm running.

Server version: Apache Tomcat/8.0.37
Server built:   Sep 1 2016 10:01:52 UTC
Server number:  8.0.37.0
OS Name:        Linux
OS Version:     2.6.32-642.4.2.el6.x86_64
Architecture:   amd64
JVM Version:    1.8.0_102-b14
JVM Vendor:     Oracle Corporation

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[Bug 60944] Tomcat Production Issue connections in CLOSE_WAIT

Bugzilla from bugzilla@apache.org
In reply to this post by Bugzilla from bugzilla@apache.org
https://bz.apache.org/bugzilla/show_bug.cgi?id=60944

Mark Thomas <[hidden email]> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Severity|critical                    |normal
             Status|NEW                         |NEEDINFO

--- Comment #3 from Mark Thomas <[hidden email]> ---
8.0.37 is 6+ months old. Generally, we ask that issues are tested against the
latest release of the appropriate major version before bugs are reported.

You'll need to provide the steps to reproduce this on a clean install of any of
the latest 7.0.x, 8.0.x, 8.5.x or 9.0.x releases.

Without the steps to reproduce the issue, this will eventually get resolved as
INVALID or WORKSFORME.

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[Bug 60944] Tomcat Production Issue connections in CLOSE_WAIT

Bugzilla from bugzilla@apache.org
In reply to this post by Bugzilla from bugzilla@apache.org
https://bz.apache.org/bugzilla/show_bug.cgi?id=60944

--- Comment #4 from Adil A <[hidden email]> ---
I was hoping this was know bug in tomcat 7 and 8 versions. Do you suggest to
install latest 8 release and test ?

This issue appears to be overtime. It works fine without restarting for a month
and then the issue appears suddenly by itself. Not sure how to reproduce the
issue. I have to wait to have enough traffic hitting tomcat servers and then
probably it appears. The issue seems to be with high traffic on the servers
since I haven't encountered this in any QA or Cert

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[Bug 60944] Tomcat Production Issue connections in CLOSE_WAIT

Bugzilla from bugzilla@apache.org
In reply to this post by Bugzilla from bugzilla@apache.org
https://bz.apache.org/bugzilla/show_bug.cgi?id=60944

Mark Thomas <[hidden email]> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEEDINFO                    |RESOLVED
         Resolution|---                         |WONTFIX

--- Comment #5 from Mark Thomas <[hidden email]> ---
It is over 9 months since the original report and no information has been
provided regarding how to reproduce this. Moving to WONTFIX.

Any who can provide the steps to reproduce this on a clean install of a
currently supported version of Tomcat should feel free to re-open this issue
and add the reproduction steps so the issue can be investigated further

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[Bug 60944] Tomcat Production Issue connections in CLOSE_WAIT

Bugzilla from bugzilla@apache.org
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https://bz.apache.org/bugzilla/show_bug.cgi?id=60944

--- Comment #6 from Diamond <[hidden email]> ---
Hi, Adil A:

I lookek up this bug, and find a similar phenomenon with our problems.
Too much CLOSE_WAIT; Won't accept new requests; Restart is OK; Can't reproduce
by intention but will reproduce after system running for a about a month;
I wonder that is your problem fixed?

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