store: Try to avoid pathological batch size adjustments #5792
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If a batch is processed very fast, that might indicate that there are very few rows actually matching the range. If this happens repeatedly, we can end up with a gigantic batch size where processing a batch takes way too long once we get into a region with denser vids. This patch tries to address that by taking a fast batch as an indication that vids are distributed sparsely and that we should jump directly to the next existing vid rather than adjusting the batch size.
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Closing this in favor of #5807 |
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If a batch is processed very fast, that might indicate that there are very few rows actually matching the range. If this happens repeatedly, we can end up with a gigantic batch size where processing a batch takes way too long once we get into a region with denser vids.
This patch tries to address that by taking a fast batch as an indication that vids are distributed sparsely and that we should jump directly to the next existing vid rather than adjusting the batch size.