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fix: mutations batcher race condition #896
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…ython-bigtable into fix_batcher_threads
mutianf
reviewed
Dec 11, 2023
igorbernstein2
approved these changes
Dec 12, 2023
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lgtm
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Labels
api: bigtable
Issues related to the googleapis/python-bigtable API.
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There was a race condition found in the threaded mutations batcher. The batcher would check the state of the queue, and then read from the queue as separate steps, which left room for other threads to change the state in between
This PR addresses the problem with the following changes:
queue.get
will now return None if the queue is empty. This allows us to check the state and get the next items in an atomic operation, replacing the need forqueue.empty
_flush_async
implementation, to simplify it and make it more thread-safe