Spark Joins SparkSQL and Spark DataFrames join(): inner outer left outer right outer semijoin Spark PairRDD: x.join(y): returns key-value pairs [(k,(v₁,v₂).....]where: k is a common key between x and y (v₁,v₂) are values in x and y leftOuterJoin() rightOuterJoin() fullOuterJoin() x = sc.parallelize([('a',2), ('b',3)]) y = sc.parallelize([('a',3), ('a',2), ('a',5)]) x.join(y).collect() [(‘a’, (2, 3)), (‘a’, (2,…

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