Difference between var and val in spark- Interview question

Var keyword is just similar to variable declaration in Java whereas Val is little different. Once a variable is declared using Val the reference cannot be changed to point to another reference.... Read more »

Lazy Evaluation in Apache Spark

Lazy evaluation in Spark means that the execution will not start until an action is triggered. The Spark Lazy evaluation, users can divide into smaller operations. It reduces the number of passes... Read more »

Difference between Coalesce and Repartition- Hadoop Interview question

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Hive partition with example – Interview Question

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