docs: clarify acks late versus retry behavior - #10448
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auvipy merged 3 commits intoAug 27, 2026
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Suppressed comments (1)docs/faq.rst:849
- The new FAQ text says a task exception "still results in an acknowledgment" and that termination via sys.exit()/signal is acknowledged, but both behaviors are configurable (e.g., task_acks_on_failure/task_acks_on_timeout and task_reject_on_worker_lost). As written, this can mislead readers into thinking these outcomes are unconditional when acks_late is enabled.
The `acks_late` setting controls when the message is acknowledged; it does not call `Task.retry` and is not an automatic retry policy. A task exception still results in an acknowledgment, and the worker also acknowledges the message when the child process is terminated by `sys.exit()` or a signal. Redelivery can instead occur when the worker loses the message before acknowledging it, for
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Aug 27, 2026
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Fixes #6178
Clarify that acks_late controls message acknowledgment timing rather than invoking Task.retry, and document the cases where Celery acknowledges a task even when late acknowledgments are enabled.