This document describes the current stable version of Celery (5.0). For development docs, go here.
Change history¶
This document contains change notes for bugfix & new features in the 5.0.x series, please see What’s new in Celery 5.0 (singularity) for an overview of what’s new in Celery 5.0.
5.0.1¶
- release-date
2020-10-18 1.00 P.M UTC+3:00
- release-by
Omer Katz
Specify UTF-8 as the encoding for log files (#6357).
Custom headers now propagate when using the protocol 1 hybrid messages (#6374).
Retry creating the database schema for the database results backend in case of a race condition (#6298).
When using the Redis results backend, awaiting for a chord no longer hangs when setting
result_expires
to 0 (#6373).When a user tries to specify the app as an option for the subcommand, a custom error message is displayed (#6363).
Fix the –without-gossip, –without-mingle, and –without-heartbeat options which now work as expected. (#6365)
Provide a clearer error message when the application cannot be loaded.
Avoid printing deprecation warnings for settings when they are loaded from Django settings (#6385).
Allow lowercase log levels for the –loglevel option (#6388).
Detaching now works as expected (#6401).
Restore broadcasting messages from celery control (#6400).
Pass back real result for single task chains (#6411).
Ensure group tasks a deeply serialized (#6342).
Fix chord element counting (#6354).
Restore the celery shell command (#6421).
5.0.0¶
- release-date
2020-09-24 6.00 P.M UTC+3:00
- release-by
Omer Katz
Breaking Change Remove AMQP result backend (#6360).
Warn when deprecated settings are used (#6353).
Expose retry_policy for Redis result backend (#6330).
Prepare Celery to support the yet to be released Python 3.9 (#6328).
5.0.0rc3¶
- release-date
2020-09-07 4.00 P.M UTC+3:00
- release-by
Omer Katz
More cleanups of leftover Python 2 support (#6338).
5.0.0rc2¶
- release-date
2020-09-01 6.30 P.M UTC+3:00
- release-by
Omer Katz
Bump minimum required eventlet version to 0.26.1.
Update Couchbase Result backend to use SDK V3.
Restore monkeypatching when gevent or eventlet are used.
5.0.0rc1¶
- release-date
2020-08-24 9.00 P.M UTC+3:00
- release-by
Omer Katz
Allow to opt out of ordered group results when using the Redis result backend (#6290).
Breaking Change Remove the deprecated celery.utils.encoding module.
5.0.0b1¶
- release-date
2020-08-19 8.30 P.M UTC+3:00
- release-by
Omer Katz
Breaking Change Drop support for the Riak result backend (#5686).
Breaking Change pytest plugin is no longer enabled by default (#6288). Install pytest-celery to enable it.
Breaking Change Brand new CLI based on Click (#5718).
5.0.0a2¶
- release-date
2020-08-05 7.15 P.M UTC+3:00
- release-by
Omer Katz
Bump Kombu version to 5.0 (#5686).
5.0.0a1¶
- release-date
2020-08-02 9.30 P.M UTC+3:00
- release-by
Omer Katz
Removed most of the compatibility code that supports Python 2 (#5686).
Modernized code to work on Python 3.6 and above (#5686).