Now a days almost all the companies are using Cloud platforms despite any technology. There are lot reasons behind it.…
Assume that we have an RDD of m partitions and another RDD of n partitions. When we perform union operation…
1). How to convert an external table to internal table? We can achieve this by using below command: ALTER TABLE…
We will never think of this kind of scenarios when we work with Hive tables in our projects. But in…
Most of us might have worked on Hive in projects. But we never get a requirement to update records in…
Similar questions: Coalesce vs. spark.sql.shuffle.partitions Coalesce vs repartition vs spark.sql.shuffle.partitions Not a frequently asked question but there are chances…
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…