Release version 4.3 of Celery

[auvipy]

@thedrow @georgepsarakis It would be great if we can release the beta version of 4.3 by December 1st. before that, we need to release py-amqp. kombu and other dependencies first though. it's a soft reminder

If you'd like to contribute, here is a list of blockers.

If you are using Celery to create a commercial product, please consider becoming our backer or our sponsor to ensure Celery's future.

[thedrow]

I released Kombu 4.2.2 with that fix only.
The build should pass now.

[thedrow]

I released Kombu 4.4 and Celery 4.3.0RC2.
Unless there's any objection or critical fix, this is going to be the last RC.

[thedrow]

I just released py-amqp 2.4.3 as well.
It fixes two severe deserialization bugs. I have not heard anything about them in production.
Probably because there are no messages in the AMQP protocol with two consequent bitmaps.
The fixes are there for completeness as I guess they could crash Celery.

[thedrow]

I have completed our what's new document for this release.

Please review it and let me know if I missed anything.

[thedrow]

I haven't generated the contribution list yet.
I'm going to do so right before GA.

Here's a list of our current release blockers:

• Add documentation to the task_acks_on_failure_or_timeout setting #5377
• Unable to create SSL broker/backend connection to redis #5371
• Update our documentation for the new compression methods introduced in Kombu 4.3 #5328
• Update documentation for Redis Broker SSL #4812
• Celery 4.3.0rc2 is not python 2.7 compatible #5383
• Celery-v4.2.1, branch master: wrong doc info for tasks_ack_late default value #5259
• Update docs for extended results #5007
• kombu.common.Broadcast does not accept custom queue name kombu#1014

Potential Blockers:

• Received error "[Errno 104] Connection reset by peer" after 180 seconds when waiting on task result #5358
• "Error 110 while writing to socket. Connection timed out." With kombu 4.4.0/4.5.0 and redis 3.2.0/3.2.1 kombu#1019
• "Error 32 while writing to socket. Broken pipe" After upgrading to kombu 4.4.0 and redis 3.2.0 kombu#1018

[thedrow]

I just released Celery 4.3.0rc3.
This includes new features and bug fixes and some resolved blockers.

[thedrow]

Only one blocker left and than some final documentation tasks.

[huangsam]

@thedrow looks like celery/kombu#1014 has been closed by a revert-based PR. However, it doesn't show as complete on the checklist. Is it incomplete because the unique keyword still needs to be supported?

[thedrow]

Yes. I'll do that and the final documentation tasks tomorrow.

[thedrow]

Released! 🎉

Thank you everyone for your efforts, time and skills.

The next version, Celery 5 is something to be excited about.

[auvipy]

I want to start removing python2 from master

[ajaykmr2292]

Can I know when will the Celery 5 be released? I am really excited to use that.

[auvipy]

maybe some times before Christmas :)

[thedrow]

@auvipy Can you issue a blog post about 4.3?

[auvipy]

yes of course, started kast ng=ight but got busy. will complete by today.