#celery

Do I really need a chain in order to execute tasks sequentially (next one comes after the previous one finishes?)

I ned to execute t1, t2, t3, t4 (...) in that order, and collect the results

Celery complains when I call .get() inside a task so I do not know how to solve this problem otherwise...

the results are completely unrelated...

t2 does not depend on t1's output

Dejan: why are calling .get() inside a task?

Hi everyone, I'm trying to use platforms.set_process_title but it doesn't seem to work. Is there a way to disable the celery proc name change so I can use setproctitle? I start my worker using celery.start(argv=['celery', 'worker', '-l', 'info', '-Q', self.options.queue_name, '-n', self.options.worker_name]).

Dejan: its bad idea to call get inside of task. really that task is blocking .... and waits for another task to finish... it may even lead to mutual lock, every worker will wait for another...

Dejan: if you want to run task from a task, do not wait for results

let the other task do something with its result, ie run third task

I do understand all that, but I am really fin if task is blocked while waiting for result from other tasks

my tasks are executed inside different processes, so I do not worry about problems that are common in other execution models

s/fin/fine/

hello all. Has anyone got a recommendation for a broker and results backend for local dev? Was looking to use sqlite but I see that this are no more since 4.

Dejan: how many workers do you have? how many concurrent jobs are you doing? you might get surprised how fast you cant get into problems :)

s/cant get /can get/

Dejan: also, it will slow down the workflow a lot

Is there a way to execute a group() sequentially?

one-by-one?

dejan: if you can reimagine your tasks in a way they do not need ordering... it will work better

every attempt to make lock, synchronization or ordering in distributed system takes huge, tremendous impact on effectivity.

look mate, i am not stupid, i understand all you are saying

i am not saying you are stupid, just trying to help from my experience ;)

in this particular case, i have to wait for the task to finish before i do the next...

is there a way to execute a group sequentially?

i made similar questions when i started...