TomcatExpert

Tomcat hangs on production and doesn’t respond to new http requests.

 

We are having issues with tomcat on production. Tomcat hangs on production and doesn’t respond to new http requests.

On making simple curl request to http://IP:8080 requests times-out in 2mins with message - curl: (52) Empty reply from server

But tomcat it able to accept new TCP connection from remote servers (we verified this using netstat command).

We are using latest version of tomcat 7.0.11.

Please Let me know if you have come across similar issues with tomcat. Reply back in case of any pointers, configuration changes that would be required.

 

asked by gaurav

question

7.0.11 was a very early release and most likely you are running into a bug. I would upgrade to 7.0.27. Even in that release, there are reports of the system hanging -

https://issues.apache.org/bugzilla/show_bug.cgi?id=53173

The bug above shows how a newly introduced feature in Tomcat 7, has had an issue in all released versions.

There are a few work arounds

  1. Use Tomcat 6 - this release is unaffected by the bug above
  2. Wait for next release of Tomcat 7
  3. Increase maxConnections value to delay the symptom of this problem

 

answer

answered by fhanik on June 4, 2012 03:59 AM

Filip Hanik is a Senior Software Engineer for the SpringSource Division of VMware, Inc. (NYSE: VMW) and a key participant in the company's Apache Tomcat initiatives. Filip brings 15 years of extensive experience in architecture, design and development of distributed application frameworks and containers and is recognized for his top-quality system development skills and continuous participation of Open Source development projects. Filip is an Apache Software Foundation member and a committer to the Apache Tomcat project where he is a leading authority on Tomcat clustering and a key contributor to the core of the platform. Filip has made contributions to software initiatives for Walmart.com, Sony Music, France Telecom and has held a variety of senior software engineering positions with technology companies in both the United States and Sweden. He received his education at Chalmers University of Technology in Gothenburg, Sweden where he majored in Computer Science and Computer Engineering.

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