chibenwa opened a new pull request, #2833:
URL: https://github.com/apache/james-project/pull/2833
- Protect against tasks that never finishes (slot is never released)
- Also harden cancelation
When cancelling a task that did not start being executed,
and is polled off the queue while we are cancelling it, then
it never gets decremented. Doing so we avoid a differential
and ensured exactly once decrement.
This version most importantly do not attempt to clean the physical
queue. It simply lets the consumer discard cancelled tasks upon execution.
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