Removes concurrency support temporarily to see if backfills complete with 100% accuracy#377
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with 100% accuracy
mattmueller-stripe
approved these changes
May 15, 2026
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Summary
There could be a race condition when backfilling using the data bisect that is causing chunks of rows to not be processed and dropped silently.
This PR reduces the concurrency to 1 for each collection so that we process in series instead of parallel to mitigate the possibility of a race condition between fetches.
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