Fix cancellation of trainings
If a user performed a training -> cancel -> training -> cancel, the last cancel did not terminate properly and the API blocked, as the process did not join.
Since we are using a process pool with only 1 slot, we can get the running processes in the pool and kill them.
Type of change
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Bug fix (non-breaking change which fixes an issue) -
New feature (non-breaking change which adds functionality) -
Breaking change (fix or feature that would cause existing functionality to not work as expected) -
This change requires a documentation update -
This change is a documentation update
Checklist:
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My code follows the style guidelines of this project -
I have performed a self-review of my own code -
I have commented my code, particularly in hard-to-understand areas -
I have made corresponding changes to the documentation -
My changes generate no new warnings -
I have added tests that prove my fix is effective or that my feature works -
New and existing unit tests pass locally with my changes