Joining data together is probably one of the most common operations on a pair RDD, and spark has full range…
groupBy function works on unpaired data or data where we want to use a different condition besides equality on the…
CombineByKey is the most general of the per-key aggregation functions. Most of the other per-key combiners are implemented using it.…
When datasets are described in terms of key/value pairs, it is common to want to aggregate statistics across all elements…
There are a number of ways to get pair RDDs in Spark and many formats will directly load pair RDDs…
An RDD in Spark is simply an immutable distributed collection of objects. Each RDD is split into multiple partitions, which…