Hadoop Interview questions


Total available count: 27
Subject - Apache
Subsubject - Hadoop

Define Spark architecture?

A master/worker architecture used by Spark. There is a driver that talks to a single coordinator called master that manages workers in which executors run. The executors and the driver run in their own Java processes.




Next 5 interview question(s)

1
What is checkpointing?
2
What is Shuffling?
3
Data is spread in all the nodes of cluster, how spark tries to process this data?
4
What is wide Transformations?
5
What is Narrow Transformations?