What are the Spark transformations that causes a Shuffle?

Question

I have trouble to find in the Spark documentation operations that causes a shuffle and operation that does not. In this list, which ones does cause a shuffle and which ones

Answer 1

Here is the generalised statement on shuffling transformations.

Transformations which can cause a shuffle include repartition operations like repartition and coalesce, ‘ByKey operations (except for counting) like groupByKey and reduceByKey, and join operations like cogroup and join.

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