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Spark reduceByKey() with RDD Example

Post author:NNK
Post category:Apache Spark RDD

Spark RDD reduceByKey() transformation is used to merge the values of each key using an associative reduce function. It is a wider transformation as it shuffles data across multiple partitions and it operates on pair RDD (key/value pair). redecuByKey() function is available in org.apache.spark.rdd.PairRDDFunctions The output will be partitioned by…

PySpark reduceByKey usage with example

Post author:NNK
Post category:PySpark

PySpark reduceByKey() transformation is used to merge the values of each key using an associative reduce function on PySpark RDD. It is a wider transformation as it shuffles data across multiple partitions and It operates on pair RDD (key/value pair). When reduceByKey() performs, the output will be partitioned by either…