Performing Aggregations - using reduceByKey and aggregateByKey

Performing Aggregations - using reduceByKey and aggregateByKey
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Originally published at: https://kaizen.itversity.com/topic/performing-aggregations-using-reducebykey-and-aggregatebykey/

Using reduceByKey reduceByKey uses combiner It is used when logic to compute intermediate values and logic to compute final value using intermediate values are same It is very straight forward to implement It takes one anonymous or lambda function with 2 arguments Using aggregateByKey aggregateByKey uses combiner It is used when logic to compute intermediate…