Spark Map vs FlatMap
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In this Apache Spark tutorial, we will discuss the comparison between Spark Map vs FlatMap Operation. Map and FlatMap are the transformation operations in Spark. Map() operation applies to each element of RDD and it returns the result as new RDD. In the Map, operation developer can define his own custom business logic. While FlatMap() is similar to Map, but FlatMap allows returning 0, 1 or more elements from map function.
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Spark Map vs FlatMap
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