Nope...as proven earlier, this is a web2py timing issue. It's been
occurring randomly in production for some time now. I have a try/except
surrounding it, but the sucky part is that since the transaction fails, you
lose all the commits in the whole request.
On Friday, February 27, 2015 at
Try too see if in production there is a transaction that stays open for a
long time.
It could be a console left open somewhere?
2015-02-27 8:42 GMT+01:00 Osman Masood oamas...@gmail.com:
Right. The purpose of using the console was to simulate what actually
happens in production.
On Thu, Feb
Right. The purpose of using the console was to simulate what actually
happens in production.
On Thu, Feb 26, 2015 at 11:39 PM, Niphlod niph...@gmail.com wrote:
you know that on console, after queue_task() you need to commit(), right ?
If you leave the transaction hanging, no wonder that you're
you know that on console, after queue_task() you need to commit(), right ?
If you leave the transaction hanging, no wonder that you're observing
deadlocks!
On Friday, February 27, 2015 at 3:38:19 AM UTC+1, Osman Masood wrote:
I was actually able to easily reproduce this. Just open up 2 web2py
it seems to me that there is database contention although the
exception **should** be trapped (i.e. try to set the status to PICK, if
not, well it's not a fatal error), there's something wrong with your
setup or your database is too much underpowered to do what you're asking.
How
Thanks for the quick response!
I'm using Amazon RDS (just basically MySQL), on a pretty beefy instance
(db.m3.large), 1000 IOPS. Would be pretty surprised if that were the
problem.
Running 5 scheduler workers with the default heartbeat (3s).
On Thursday, February 26, 2015 at 3:35:41 PM UTC-8,
I was actually able to easily reproduce this. Just open up 2 web2py
consoles (which connect to the same DB), and do:
scheduler.queue_task('myfunc', pvars=dict(), immediate=True)
The first one will succeed, and the second one will hang there for some
time, and then give the deadlock exception
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