Darryl L. Pierce created QPID-6107:
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             Summary: Python Swig wrapped bindings consistently fail with spout 
and drain
                 Key: QPID-6107
                 URL: https://issues.apache.org/jira/browse/QPID-6107
             Project: Qpid
          Issue Type: Bug
          Components: Python Client (Wrapped)
            Reporter: Darryl L. Pierce
            Assignee: Darryl L. Pierce


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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