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Explain Spark leftOuterJoin() and rightOuterJoin() operation?
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Answer / Krishna Chandra Yadav
Spark leftOuterJoin() is a type of outer join that returns all records from the left RDD (first argument) and matching records from the right RDD (second argument), with null values for missing keys on the right side. If there are no matches, the result contains NULLs on the right side.nSpark rightOuterJoin() is similar, but it returns all records from the right RDD and matching records from the left RDD, with null values for missing keys on the left side. If there are no matches, the result contains NULLs on the left side.
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