Intermittent failure of test-modex.rb

[baron1405]

As part of our nightly build we run the FSDB unit tests. Intermittently the test-modex.rb tests fail. The output from the test is:

deadlock 0x7ffde572ffc0: sleep:-  - ./lib/fsdb/modex.rb:53
deadlock 0x7ffde5730358: sleep:-  - ./lib/fsdb/modex.rb:53
deadlock 0x7ffde5730830: sleep:-  - ./lib/fsdb/modex.rb:53
deadlock 0x7ffde5730d80: sleep:-  - ./lib/fsdb/modex.rb:53
deadlock 0x7ffde57312d0: sleep:-  - ./lib/fsdb/modex.rb:53
deadlock 0x7ffde5731758: sleep:-  - ./lib/fsdb/modex.rb:53
deadlock 0x7ffde5731ca8: sleep:-  - ./lib/fsdb/modex.rb:53
deadlock 0x7ffde5732130: sleep:-  - ./lib/fsdb/modex.rb:53
deadlock 0x7ffde5732518: sleep:-  - ./lib/fsdb/modex.rb:53
deadlock 0x7ffde575f360: sleep:J(0x7ffde5732518) (main) - test/test-modex.rb:118
deadlock 0x7ffde572fc28: sleep:-  - ./lib/fsdb/modex.rb:53
not owner
  ./lib/fsdb/modex.rb:53:in `synchronize'
  ./lib/fsdb/modex.rb:41:in `lock'
  ./lib/fsdb/modex.rb:94:in `synchronize'
  test/test-modex.rb:89
  test/test-modex.rb:84:in `times'
  test/test-modex.rb:84
  test/test-modex.rb:45:in `initialize'
  test/test-modex.rb:43:in `initialize'
  test/test-modex.rb:67:in `new'
  test/test-modex.rb:67
  test/test-modex.rb:3:in `map'
  test/test-modex.rb:66:in `each'
  test/test-modex.rb:66:in `map'
  test/test-modex.rb:66
not owner
  ./lib/fsdb/modex.rb:53:in `synchronize'
  ./lib/fsdb/modex.rb:41:in `lock'
  ./lib/fsdb/modex.rb:94:in `synchronize'
  test/test-modex.rb:89
  test/test-modex.rb:84:in `times'
  test/test-modex.rb:84
  test/test-modex.rb:45:in `initialize'
  test/test-modex.rb:43:in `initialize'
  test/test-modex.rb:67:in `new'
  test/test-modex.rb:67
  test/test-modex.rb:3:in `map'
  test/test-modex.rb:66:in `each'
  test/test-modex.rb:66:in `map'
  test/test-modex.rb:66
not owner
  ./lib/fsdb/modex.rb:53:in `synchronize'
  ./lib/fsdb/modex.rb:41:in `lock'
  ./lib/fsdb/modex.rb:94:in `synchronize'
  test/test-modex.rb:89
  test/test-modex.rb:84:in `times'
  test/test-modex.rb:84
  test/test-modex.rb:45:in `initialize'
  test/test-modex.rb:43:in `initialize'
  test/test-modex.rb:67:in `new'
  test/test-modex.rb:67
  test/test-modex.rb:3:in `map'
  test/test-modex.rb:66:in `each'
  test/test-modex.rb:66:in `map'
  test/test-modex.rb:66
not owner
  ./lib/fsdb/modex.rb:53:in `synchronize'
  ./lib/fsdb/modex.rb:41:in `lock'
  ./lib/fsdb/modex.rb:94:in `synchronize'
  test/test-modex.rb:89
  test/test-modex.rb:84:in `times'
  test/test-modex.rb:84
  test/test-modex.rb:45:in `initialize'
  test/test-modex.rb:43:in `initialize'
  test/test-modex.rb:67:in `new'
  test/test-modex.rb:67
  test/test-modex.rb:3:in `map'
  test/test-modex.rb:66:in `each'
  test/test-modex.rb:66:in `map'
  test/test-modex.rb:66
not owner
  ./lib/fsdb/modex.rb:53:in `synchronize'
  ./lib/fsdb/modex.rb:41:in `lock'
  ./lib/fsdb/modex.rb:94:in `synchronize'
  test/test-modex.rb:89
  test/test-modex.rb:84:in `times'
  test/test-modex.rb:84
  test/test-modex.rb:45:in `initialize'
  test/test-modex.rb:43:in `initialize'
  test/test-modex.rb:67:in `new'
  test/test-modex.rb:67
  test/test-modex.rb:3:in `map'
  test/test-modex.rb:66:in `each'
  test/test-modex.rb:66:in `map'
  test/test-modex.rb:66
not owner
  ./lib/fsdb/modex.rb:53:in `synchronize'
  ./lib/fsdb/modex.rb:41:in `lock'
  ./lib/fsdb/modex.rb:94:in `synchronize'
  test/test-modex.rb:101
  test/test-modex.rb:84:in `times'
  test/test-modex.rb:84
  test/test-modex.rb:45:in `initialize'
  test/test-modex.rb:43:in `initialize'
  test/test-modex.rb:67:in `new'
  test/test-modex.rb:67
  test/test-modex.rb:3:in `map'
  test/test-modex.rb:66:in `each'
  test/test-modex.rb:66:in `map'
  test/test-modex.rb:66
not owner
  ./lib/fsdb/modex.rb:53:in `synchronize'
  ./lib/fsdb/modex.rb:41:in `lock'
  ./lib/fsdb/modex.rb:94:in `synchronize'
  test/test-modex.rb:89
  test/test-modex.rb:84:in `times'
  test/test-modex.rb:84
  test/test-modex.rb:45:in `initialize'
  test/test-modex.rb:43:in `initialize'
  test/test-modex.rb:67:in `new'
  test/test-modex.rb:67
  test/test-modex.rb:3:in `map'
  test/test-modex.rb:66:in `each'
  test/test-modex.rb:66:in `map'
  test/test-modex.rb:66
not owner
  ./lib/fsdb/modex.rb:53:in `synchronize'
  ./lib/fsdb/modex.rb:41:in `lock'
  ./lib/fsdb/modex.rb:94:in `synchronize'
  test/test-modex.rb:89
  test/test-modex.rb:84:in `times'
  test/test-modex.rb:84
  test/test-modex.rb:45:in `initialize'
  test/test-modex.rb:43:in `initialize'
  test/test-modex.rb:67:in `new'
  test/test-modex.rb:67
  test/test-modex.rb:3:in `map'
  test/test-modex.rb:66:in `each'
  test/test-modex.rb:66:in `map'
  test/test-modex.rb:66
not owner
  ./lib/fsdb/modex.rb:53:in `synchronize'
  ./lib/fsdb/modex.rb:41:in `lock'
  ./lib/fsdb/modex.rb:94:in `synchronize'
  test/test-modex.rb:89
  test/test-modex.rb:84:in `times'
  test/test-modex.rb:84
  test/test-modex.rb:45:in `initialize'
  test/test-modex.rb:43:in `initialize'
  test/test-modex.rb:67:in ./lib/fsdb/modex.rb:53: Thread(0x7ffde572fc28): deadlock (fatal)
    from test/test-modex.rb:3:in `inject'
    from test/test-modex.rb:118:in `each'
    from test/test-modex.rb:118:in `inject'
    from test/test-modex.rb:118
`new'
  test/test-modex.rb:67
  test/test-modex.rb:3:in `map'
  test/test-modex.rb:66:in `each'
  test/test-modex.rb:66:in `map'
  test/test-modex.rb:66
not owner
  ./lib/fsdb/modex.rb:53:in `synchronize'
  ./lib/fsdb/modex.rb:41:in `lock'
  ./lib/fsdb/modex.rb:94:in `synchronize'
  test/test-modex.rb:101
  test/test-modex.rb:84:in `times'
  test/test-modex.rb:84
  test/test-modex.rb:45:in `initialize'
  test/test-modex.rb:43:in `initialize'
  test/test-modex.rb:67:in `new'
  test/test-modex.rb:67
  test/test-modex.rb:3:in `map'
  test/test-modex.rb:66:in `each'
  test/test-modex.rb:66:in `map'
  test/test-modex.rb:66

The system configuration is:

• Ruby 1.8.7
• CentOS 6.2
• FSDB commit 9dfb60e (0.7.2 plus shared_lock and 1.8.7 commits)

The test-concurrency.rb, test-formats.rb, and test-fsdb.rb tests all pass reliably.

[vjoel]

Haven't been able to reproduce this yet, but will keep trying.

What does ruby -v say on your system?

[baron1405]

ruby 1.8.7 (2011-06-30 patchlevel 352) [x86-64-linux]

[baron1405]

Any update on this?

[vjoel]

Thanks for reminding me. I'll look at it again this weekend.

On 07/05/2012 09:29 AM, Baron Roberts wrote:

Any update on this?

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