Now can bulk upsert the review, with a >20x speedup
Now can bulk upsert the review, with a >20x speedup

Based on the fact that a product's review is consecutive, I
write a new function that goes over the reviews, and after
one product is done, upsert all the reviews for one product

MachineLearningStudyGroup/Smart_Review_Summarization,MachineLearningStudyGroup/Smart_Review_Summarization,MachineLearningStudyGroup/Smart_Review_Summarization,MachineLearningStudyGroup/Smart_Review_Summarization