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Answer Posted / Neeraj Gupta
{"In Apache Spark, map() applies a function to each element of an RDD or DataFrame, creating a new collection with the transformed elements. FlatMap(), on the other hand, splits each input element into zero or more output elements (similar to map()) and then concatenates them all together, creating a single collection instead of a collection per input element. This can be useful for processing streams or breaking down complex data structures."}
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