ashb opened a new pull request #5615: [AIRFLOW-XXX] Use events/messages not multiprocessing.Manager URL: https://github.com/apache/airflow/pull/5615 Attempting to dig in to the issue reported by @Eronarn of leaking processes we've so far managed to track it down to a leaking multiprocess.Manager process. Somehow. So in a (vain?) attempt to sort that out I have just removed manager's from the scheduler entirely, and re-written the multiprocessing how I would if I was writing this in golang channels - passing objects/messages over a single channel, and shutting down when done (so we don't need a "Done" signal, and we can `.poll()` on the channel to see if there is anything to receive. This is a draft PR against v1-10-stable as that is what I was testing against for release purposes, but for master the diff will be similar. Does this approach seem sensible? Have I forgotten something?
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