Add log when worker is "rebooted" with --max-tasks-per-child or --max-memory-per-child

[laurent-brisbois]

Checklist

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Related Issues and Possible Duplicates

Related Issues

• None

Possible Duplicates

• None

Brief Summary

When I started using the parameters --max-tasks-per-child and --max-memory-per-child, I first tried with --max-tasks-per-child=3 to see if it was working.
I was starring at the logs and I had no clue if it was working or not, except by checking the INFO/ForkPoolWorker-... worker number to see it was changing every 3 tasks. It's ok for three but could be annoying to check with greater limit.

I didn't test --max-memory-per-child yet to see if it was in the logs but I guess not.

Would it be possible to add a log for that ?

Something like :

• logger.info("Stopped worker-<number_of_the_worker>: reached max tasks limit
• logger.info("Stopped worker-<number_of_the_worker>: reached max memory limit

Small note/context :
I'm currently using celery==5.2.7 and django-celery-beat==2.5.0 and I want to to start using these options because once every a few days, I have to restart my application as my celery workers seem to reach some kind of memory limit. And I'd like to have these worker events (drop worker,...) in my logs.

I'm open to make the contribution myself if I can find the place where such check is done (in billiard apparently).

Design

Architectural Considerations

None

Proposed Behavior

Something like :

• logger.info("Stopped worker-<number_of_the_worker>: reached max tasks limit
• logger.info("Stopped worker-<number_of_the_worker>: reached max memory limit

Proposed UI/UX

N/A

Diagrams

N/A

Alternatives

None