JRuby File.rename() behavior different from Ruby, causes log rotation issue
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Key: JRUBY-1672
URL: http://jira.codehaus.org/browse/JRUBY-1672
Project: JRuby
Issue Type: Bug
Components: Core Classes/Modules
Affects Versions: JRuby 1.1b1
Environment: Windows XP SP2, JRuby 1.1b1, Mongrel 1.1.1
Ruby IRB using ruby 1.8.6 (2007-03-13 patchlevel 0) [i386-mswin32]
Reporter: Ka Yick Chua
Priority: Minor
During a file rename operation, when the destination file exist, Ruby will
overwrite the destination file with the source.
With JRuby, both files are untouched. As a result, the log rotation fails (no
rotation occurs) after the maximum number of logs have reached, since it
depends on the rename to overwrite the existing log files (Line 556 of
lib/ruby/1.8/logger.rb).
The 2 IRB sessions below shows the problem.
Ruby IRB:
irb(main):001:0> File.open('test1.txt', 'w') { |file| file.write('test1') }
=> 5
irb(main):002:0> File.open('test2.txt', 'w') { |file| file.write('test2') }
=> 5
irb(main):003:0> File.read('test2.txt')
=> "test2"
irb(main):004:0> File.rename('test1.txt', 'test2.txt')
=> 0
irb(main):005:0> File.read('test2.txt')
=> "test1"
irb(main):006:0> File.read('test1.txt')
Errno::ENOENT: No such file or directory - test1.txt
from (irb):6:in `read'
from (irb):6
from :0
irb(main):007:0>
JRuby jIRB:
irb(main):001:0> File.open('test1.txt', 'w') { |file| file.write('test1') }
=> 5
irb(main):002:0> File.open('test2.txt', 'w') { |file| file.write('test2') }
=> 5
irb(main):003:0> File.read('test2.txt')
=> "test2"
irb(main):004:0> File.rename('test1.txt', 'test2.txt')
=> 0
irb(main):005:0> File.read('test2.txt') # Expecting "test1"
=> "test2"
irb(main):006:0> File.read('test1.txt') # Expecting error
=> "test1"
irb(main):007:0>
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