Hi Franck
We also hit this issue and rolled back our Celery version. We later decided to run Airflow on Python 3 and discovered that librabbitmq isn't compatible with Python 3 either and used the "amqp" package instead (version 2.1.2). We never got around to moving back up to a more recent version of Celery after that, but it may well be compatible there too. Regards, Robin Miller OLIVER WYMAN [email protected]<mailto:[email protected]> www.oliverwyman.com<http://www.oliverwyman.com/> ________________________________ From: Glenn McClements <[email protected]> Sent: 10 February 2017 16:14:17 To: [email protected] Subject: Re: Airflow issue Yep, hit the same issue myself when I upgraded to Ubuntu 16. There were previous mails about this but can’t actually find them. The errors I were getting were non-intuitive so it’s good to make other folks aware. GLENN MCCLEMENTS SVP Engineering, Europe Adelaide Exchange Building, 2nd Floor, 24-26 Adelaide Street, Belfast, BT2 8GD velatradingtech.com | @vela_tt On 10/02/2017, 06:43, "Franck Coiffier" <[email protected]> wrote: Hi, I'm writing to you because I had an issue with Airflow (1.7.1.3). I was using Celery with RabbitMQ and because of the requirements 'celery>=3.1.17', the Celery version 4.0.2 was installed in my case. I was capable of publishing tasks in the queue but when the worker read them, it output : "[WARNING/MainProcess] Received and deleted unknown message. Wrong destination?!?" (like this : https://github.com/celery/celery/issues/3675) After a bit more research, I found that Celery > 4.0 might be incompatible with librabbitmq (I am using 1.6.1) : https://github.com/celery/celery/issues/3689#issuecomment-267465309 So I uninstall Celery and reinstall it with 'celery>=3.1.17,<4.0' and now it's working like a charm. I don't know if you will be able to reproduce the problem but I wanted to share the info with you. Best regards, Franck The information contained in this message may be privileged and confidential and protected from disclosure. If the reader of this message is not the intended recipient, you are hereby notified that any dissemination, distribution or copying of this communication is strictly prohibited. If you have received this communication in error, please notify us immediately by replying to this message and deleting it from your computer. Thank you. Vela Trading Technologies LLC ________________________________ This e-mail and any attachments may be confidential or legally privileged. If you received this message in error or are not the intended recipient, you should destroy the e-mail message and any attachments or copies, and you are prohibited from retaining, distributing, disclosing or using any information contained herein. Please inform us of the erroneous delivery by return e-mail. Thank you for your cooperation.
