luigi.worker.Worker(retry_external_tasks=True) has no effect #2077
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Description
Use the retry_external_tasks parameter local to the worker instead of the global settings.
Motivation and Context
The change is required when starting a worker from Python. It is not needed when starting a worker using the luigi binary.
Have you tested this? If so, how?
I have included unit tests. The test don't run to completion without the change to the code.