django - celery parallel tasking error 'no result backend configured' -

-

running django-celery 3.1.16, celery 3.1.17, django 1.4.16. trying run parallel tasks using 3 workers , collect results using following:

from celery import group  positions = [] jobs = group(celery_calculate_something.s(data.id) data in a_very_big_list) results = jobs.apply_async() positions.extend(results.get())

the task celery_calculate_something returns object place in results list:

app.task(ignore_result=false) def celery_calculate_something(id):   <do stuff>

no matter try, same result when calling get() on results:

no result backend configured.  please see documentation more information.

however, results backend configured - have many other tasks ignore_result=false merrily adding tasks meta table in django_celery. using results returned group(). should note not set explicitly in settings - seems django-celery has set automatically you.

i have worker collecting events using:

manage.py celery worker -l info -e

and celerycam running 

python manage.py celerycam

inspecting results object returned (an instance of groupresult) can see backend attr instance of disabledbackend. problem? have mis-understood?

you did not configure results backend, need tables store results, since have django-celery add installed_apps in settings.py file , perform migration (python manage.py migrate) after open celery.py file , modify backend djcelery.backends.database:databasebackend.
here's example 

app = celery('almanet',  broker='amqp://guest@localhost//',  backend='djcelery.backends.database:databasebackend',  include=['alm_crm.tasks'] #references tasks. donc forget put whole absolute path.  )

after can import results from celery import result can save result , extract result job.id

from celery import group positions = [] jobs = group(celery_calculate_something.s(data.id) data in a_very_big_list) results = jobs.apply_async() results.save() some_task_result = result.groupresult.restore(results.id) print some_task_results.ready()

Comments

Post a Comment

Popular posts from this blog

python - mat is not a numerical tuple : openCV error -

-
i have write down code showing error ma not getting it: please help: showing mat not numerical tuple: import cv import cv2 capture = cv2.videocapture("j.3gp") while(1): _, frame1 = capture.read() grayimage1 = cv2.cvtcolor(frame1, cv2.color_bgr2gray) _, frame2 = capture.read() grayimage2 = cv2.cvtcolor(frame2, cv2.color_bgr2gray) differenceimage = cv2.absdiff(grayimage1,grayimage2) thresholdimage = cv2.threshold(differenceimage,25,255,cv2.thresh_binary) cv2.imshow("difference image", differenceimage) cv2.imshow("threshold image", thresholdimage) cv2.imshow("image", frame1) k = cv2.waitkey(30) & 0xff error arising : ----------------------------------------------------------------------------------------- traceback (most recent call last): file "desk.py", line 15, in <module> cv2.imshow("threshold image", thresholdimage) typeerror: mat not numerical tuple
Read more

c# - MSAA finds controls UI Automation doesn't -

-
i'm working on automating windows application. i'm using teststack white framework. i've hit problem. program has 'window' object cannot see inside of. white shows no controls inside of it. inspect.exe shows no controls inside of either when running in ui automation mode. if switch inspect msaa see controls inside fine. there anyway me use msaa c# handle on these controls? if can identify msaa functions need, can use p/invoke call them c#. here's example article doing msaa: http://www.codeproject.com/articles/38906/ui-automation-using-microsoft-active-accessibility also, pinvoke.net can used identify iaccessible (msaa) functions: http://www.pinvoke.net/search.aspx?search=iaccessible&namespace=[all] here's answer along lines: msaa com-based? finally, alternative p/invoke, might able use tlbimp.exe create wrapper assembly oleacc.dll, , access msaa functions through it. i'm not sure if works msaa, it's worth try. as e
Read more

wordpress - .htaccess: RewriteRule: bad flag delimiters -

-
pulling hair out on one. have following .htaccess file custom redirects in addition wordpress's default settings. when tested on local wamp server worked fine after moving production i'm not getting rewriterule: bad flag delimiters error in server log , after while site goes down internal server error any appreciated. in advance! <ifmodule mod_rewrite.c> rewriteengine on rewritebase / rewriterule ^rockford_weddings___welcome\.html$ /wedding/ [r=301,l] rewriterule ^blog/?$ /journal/ [r=301,l] rewriterule ^blog/(.*)$ /$1 [r=301,l] rewriterule ^portraitinvestment/?$ /portraitinvestment\.pdf [r=301,l] rewriterule ^weddinginvestment/?$ /weddinginvestment\.pdf [r=301,l] rewriterule ^holidaycards2014/?$ /holidaycards2014\.pdf [r=301,l] </ifmodule> # begin wordpress <ifmodule mod_rewrite.c> rewriteengine on rewritebase / rewriterule ^index\.php$ - [l] rewritecond %{request_filename} !-f rewritecond %{request_filename} !-d rewriterule . /index.php [l] </
Read more