Fold method is not commonly used in Scala as we have reduce method, which gives the same functionality. When we…
1). How to import large object such as BLOB and CLOB using Sqoop? There is not arguments available for direct…
Sqoop is a common data migration tool used to import data from RDBMS tables to other Hadoop components. It is…
It is a very common question in Java interviews. But if you has mentioned Java along with your Big data…
This will be must and should question in Spark interviews. Understanding the resource allocation for a Spark job is very…
Spark SQL in one of modules available in Spark that runs on top of Spark Core module for structured data…
Not a common question but lot of developers are confused between these two functions including me. So I thought of…
Similar questions What is the difference between RDD, Dataframe and Dataset? Compare RDD, Dataframe and Datasets. Spark release…
Similar questions: What is the difference between reduce() and reduceByKey()? reduce() vs reduceByKey() The main difference between reduce and…
This is one of the most common interview questions. As a Spark applications developer we must have the idea of…