Retries get_work on null response #1345
Merged
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Sometimes the scheduler gives a null response to get_work, resulting in an error
when the worker tries to treat the response as a dict and killing the worker.
This change will retry up to 3 times upon receiving a null response, allowing
the worker to live and continue working.
Note: this has a merge conflict with #1341 because they both modify get_work but it's easily resolved.