Re: plpython intermittent ImportErrors

On 01/14/2013 09:55 AM, Brian Sutherland wrote:

>>>
>>> Changing the order in which the tests are run, or running tests
>>> individually makes the error move/change or disappear. The behaviour is
>>> the same with PostgreSQL versions 9.2.2 and 9.1.7.
>>>
>>> I have tried (but failed) to reproduce this error in a simple .sql
>>> script. Outside of the tests, it always seems to work.
>>>
>>> Having run into a brick wall debugging this, I'm hoping there's someone
>>> here who can help?
>>
>> Since order seems to be important what test is run prior to the
>> function failing versus the test run when it succeeds?
>
> Experimenting, I can get it down to about 3 tests. At that point it
> succeeds about 80% of the time and the errors start being more random
> (i.e. different modules are unimportable).  It also starts erroring
> inside the stored procedure itself rather than at "import site" time.
> The database backend stops closing the connection immediately.

What are the stored procedure errors?

>
> The 2 preceding tests, in this case, do not call the stored procedure
> (or any plpython code) at all.
>
> I'm guessing that it's some kind of race condition, but I wouldn't know
> where to start looking.

Just a guess, something is screwing around with sys.path.

>


--
Adrian Klaver
adrian.klaver@gmail.com