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> It is an action
> It returns the list of values in the RDD for key ‘key’
val rdd1 = sc.parallelize(Seq(("Spark",78),("Hive",95),("spark",15),("HBase",25),("spark",39),("BigData",78),("spark",49)))
rdd1.lookup("spark")
rdd1.lookup("Hive")
rdd1.lookup("BigData")
Output:
Seq[Int] = WrappedArray(15, 39, 49)
Seq[Int] = WrappedArray(95)
Seq[Int] = WrappedArray(78)
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