Chapter 13. Concurrency Control
https://www.postgresql.org/docs/9.1/static/mvcc.html
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Resources:
- http://web2py.com
- http://web2py.com/book (Documentation)
- http://github.com/web2py/web2py (Source code)
- https://code.google.com/p/web2py/issues/list (Report Issues)
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You received
sorry Dave here's the correct link :
https://groups.google.com/d/msg/web2py/Z581Pk3RCYI/qdiy0INcm2oJ
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Resources:
- http://web2py.com
- http://web2py.com/book (Documentation)
- http://github.com/web2py/web2py (Source code)
- https://code.google.com/p/web2py/issues/list (Report Issues)
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You
Dave take a look at this :
https://groups.google.com/forum/?fromgroups#!topicsearchin/web2py/race$20condition;context-place=forum/web2py/web2py/Z581Pk3RCYI/web2py/Z581Pk3RCYI/web2py/Z581Pk3RCYI
I wasn't aware of the "race condition issue".( concurrent Parallel Threads
"collision") . I did some
ha: yep, the logic is totally flawed. You can't be sure your task has been
correctly processed just by queueing it. The task DOESN'T obviously run in
the same transaction the webpage displaying the form is.
On Thursday, September 29, 2016 at 5:54:20 PM UTC+2, Pierre wrote:
>
> very confusing
On Thursday, September 29, 2016 at 8:54:20 AM UTC-7, Pierre wrote:
>
> very confusing situation
> problem has been addressed long time ago:
>
>
> https://groups.google.com/forum/?fromgroups#!topicsearchin/web2py/race$20condition;context-place=forum/web2py/web2py/Z581Pk3RCYI/web2py/Z581Pk3RCYI
>
very confusing situation
problem has been addressed long time ago:
https://groups.google.com/forum/?fromgroups#!topicsearchin/web2py/race$20condition;context-place=forum/web2py/web2py/Z581Pk3RCYI/web2py/Z581Pk3RCYI
what I observe is that transaction logic doesn't work as expected in the
I am starting the workers/sched processes with this :
python web2py.py -a 'password' -K appname,appname
and the tasks are queued in a controller function then . Tasks use module
functions
As far as I understand
ret = db.validate_and_insert(fa='something',fb='somethingelse')
is not supposed
the POV of this question is wrong. Scheduler processes do what you ask them
to do, without nothing else added.
The same thing you observe would happen if you try to execute your tasks
manually. It just seems that what you are asking them to do violates your
model (i.e. either you had already a
On Wednesday, September 28, 2016 at 3:58:10 AM UTC-7, Pierre wrote:
>
> Hi ,
>
>
> I noticed an unexpected behaviour when running two scheduler processes.
>
>
> The situation is this :
>
>
> A db with a table like :
>
>
> db.define_table('taba',
> Field('fa', unique=True, requires =
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