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The basic principle of the shuffle algorithm is to bucket the input data, where each bucket’s data can be processed independently and output results. This reduces the size of the hash table when aggregating data.Taking the group operator as an example, there are two implementation methods: sort group and hash group....

For several years already, my StackOverflow profile has consistently ranked in the top 1%, having now several tens of thousands of points.When people see my score, they often assume that I spend hours going through random questions and providing answers. However, this is a complete misconception. In reality, I rarel...

My dear, priests, holy fathers, monks and other such a folk. I didn’t get my CS degree so I can see you turn programming into a religion.Allow me to elaborate.Nobody expects the Spanish Inquisition!Humans once used religion to explain phenomena they could not understand. Over time, we evolved. Religious practitioner...