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  1. Qpid
  2. QPID-6107

Python Swig wrapped bindings consistently fail with spout and drain

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Details

    • Bug
    • Status: Closed
    • Major
    • Resolution: Fixed
    • None
    • 0.31
    • None

    Description

      In testing the packages [1] I have come across an interesting situation.
      It first came up on Ubuntu trusty but then I was able to reproduce it on
      F20.

      If I send less than 2272 messages using the spout tool then things
      success. But at 2273 then the Python bindings fail with:

      Fatal Python error: deallocating None
      Aborted (core dumped)

      using the following command line:

      $ python /usr/share/doc/python-qpid-messaging/examples/python/spout --count 2272 "my-queue;

      {create:always,delete:receiver}

      "

      I'm not sure why 2273 is the magic number. On Fedora the number seems to
      be a little bit lower at 2269 before it starts to fail as on Debian.

      On the other side, when I then drain the queue with:

      $ python /usr/share/doc/python-qpid-messaging/examples/python/drain "my-queue"

      I can't receive more than 1505 messages on Debian and 1503 on Fedora
      before the same error occurs. To verify this I ran very specific spout
      and drain situations with Python. On Debian I did:

      $ sudo service qpidd stop; sudo service qpidd start; python /usr/share/doc/python-qpid-messaging/examples/python/spout --count 1505 "my-queue;

      {create:always,delete:receiver}

      "
      $ python /usr/share/doc/python-qpid-messaging/examples/python/drain "my-queue"

      $ sudo service qpidd stop; sudo service qpidd start; python /usr/share/doc/python-qpid-messaging/examples/python/spout --count 1506 "my-queue;

      {create:always,delete:receiver}

      "
      $ python /usr/share/doc/python-qpid-messaging/examples/python/drain
      "my-queue" > output.txtFatal Python error: deallocating None
      Aborted (core dumped)

      On Fedora I changed 1505/1506 to 1503/1504 and the output was
      consistently the same.

      [1] https://launchpad.net/~mcpierce/+archive/ubuntu/qpid-testing/+packages

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            mcpierce Darryl Pierce
            mcpierce Darryl Pierce
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              Created:
              Updated:
              Resolved: