Checklist

• I have verified that the issue exists against the master branch of Celery.
• This has already been asked to the discussion group first.
• I have read the relevant section in the
  contribution guide
  on reporting bugs.
• I have checked the issues list
  for similar or identical bug reports.
• I have checked the pull requests list
  for existing proposed fixes.
• I have checked the commit log
  to find out if the bug was already fixed in the master branch.
• I have included all related issues and possible duplicate issues
  in this issue (If there are none, check this box anyway).

Mandatory Debugging Information

• I have included the output of celery -A proj report in the issue.
  (if you are not able to do this, then at least specify the Celery
  version affected).
• I have verified that the issue exists against the master branch of Celery.
• I have included the contents of pip freeze in the issue.
• I have included all the versions of all the external dependencies required
  to reproduce this bug.

Optional Debugging Information

• I have tried reproducing the issue on more than one Python version
  and/or implementation.
• I have tried reproducing the issue on more than one message broker and/or
  result backend.
• I have tried reproducing the issue on more than one version of the message
  broker and/or result backend.
• I have tried reproducing the issue on more than one operating system.
• I have tried reproducing the issue on more than one workers pool.
• I have tried reproducing the issue with autoscaling, retries,
  ETA/Countdown & rate limits disabled.
• I have tried reproducing the issue after downgrading
  and/or upgrading Celery and its dependencies.

Related Issues and Possible Duplicates

Related Issues

• added retry_on_timeout and socket_keepalive to redis connection #5952
• Calling a task returns a TypeError in 3.1.19 with redis as a broker. #2903

Possible Duplicates

• None

Environment & Settings

Celery version: 4.4.1

Steps to Reproduce

Required Dependencies

Python Packages

Other Dependencies

Minimally Reproducible Test Case

Expected Behavior

Celery just works

Actual Behavior

After upgrading Celery from 4.4.0 to 4.4.1 I suddenly see TypeError: __init__() got an unexpected keyword argument 'socket_keepalive'.

This seems to be caused by PR #5952, which adds this kwarg for Redis connections. However, not all Redis connection constructors take the same arguments (e.g. UnixDomainSocketConnection doesn't take socket_keepalive). This seems to be happened before as noted in issue #2903.

Everything works fine if I downgrade to 4.4.0 again.