Clean up multiprocessing pools on failure#208
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Ensure bagit-python reliably cleans up multiprocessing pools when parallel manifest generation or validation fails with processes > 1. Successful make_bag() calls already cleaned up correctly through the normal graceful pool path. The gap was failures inside Pool.map(): worker exceptions skipped close() and join(), allowing BagIt child processes to remain alive after the caller received the error. In long-running services, those leftover children can later become orphaned or defunct when the owning worker exits. This follows up on c451b24 ("Wait for validation Pool to finish"), the validation-pool cleanup work Douglas and I did, by extending the same reliability expectation to failure paths.
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Ensure bagit-python reliably cleans up multiprocessing pools when parallel manifest generation or validation fails with processes > 1.
Successful make_bag() calls already cleaned up correctly through the normal graceful pool path. The gap was failures inside Pool.map(): worker exceptions skipped close() and join(), allowing BagIt child processes to remain alive after the caller received the error. In long-running services, those leftover children can later become orphaned or defunct when the owning worker exits.
This follows up on c451b24 ("Wait for validation Pool to finish"), the validation-pool cleanup work Douglas and I did, by extending the same reliability expectation to failure paths.