JRuby and open-uri File handle issue
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Key: JRUBY-4767
URL: http://jira.codehaus.org/browse/JRUBY-4767
Project: JRuby
Issue Type: Bug
Affects Versions: JRuby 1.4, JRuby 1.5.0.RC2
Environment: RHEL 5.4, Centos 5
Reporter: Homer Simpson
Assignee: Thomas E Enebo
We noticed a build up of unreleased file handles for the tomcat user when
running Rails with JRuby (Warbler war) on Tomcat.
The handles building up look like this (using lsof):
java 20153 tomcat 95r FIFO 0,6 12572360
pipe
java 20153 tomcat 99w FIFO 0,6 12572360
pipe
java 20153 tomcat 100r 0000 0,11 0 12572361
eventpoll
There are always 2 pipe entries for every 1 eventpoll entry. These handles
never go away until we restart Tomcat.
I have pinpointed the functionality causing the issue and created a simple test
case script that can be run outside of Rails and Tomcat that duplicates the
problem.
When I run the script below with plain Ruby those handles are not stuck (while
on the read line)
When I run it with Jruby (tested 1.4.0 and 1.5.0RC2) I see the handles stuck
until I terminate the script.
Here is the script:
require 'open-uri'
x = open("http://www.google.com";)
puts x.read
x.close
x = nil
puts STDIN.read
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