SparkSession vs SparkContext vs SQLContext vs HiveContext

SparkSession vs SparkContext vs SQLContext vs HiveContext

What is the difference between SparkSession, SparkContext HiveContext and SQLContext? In this article, I am going to cover the various entry points for Spark Applications and how these have evolved over the releases made.

In the big data era, Apache Spark is probably one of the most popular technologies as it offers a unified engine for processing enormous amount of data in a reasonable amount of time.

In this article, I am going to cover the various entry points for Spark Applications and how these have evolved over the releases made. Before doing so, it might be useful to go through some basic concepts and terms so that we can then jump more easily to the entry points namely SparkSession, SparkContext or SQLContext.

Spark Basic Architecture and Terminology

A Spark Application consists of a Driver Program and a group of Executors on the cluster. The Driver is a process that executes the main program of your Spark application and creates the SparkContext that coordinates the execution of jobs (more on this later). *The executors are processes running on the worker nodes of the cluster which are responsible for executing the *tasks the driver process has assigned to them.

The cluster manager (such as Mesos or YARN) is responsible for the allocation of physical resources to Spark Applications.

software-development big-data data-science spark programming

Bootstrap 5 Complete Course with Examples

Bootstrap 5 Tutorial - Bootstrap 5 Crash Course for Beginners

Nest.JS Tutorial for Beginners

Hello Vue 3: A First Look at Vue 3 and the Composition API

Building a simple Applications with Vue 3

Deno Crash Course: Explore Deno and Create a full REST API with Deno

How to Build a Real-time Chat App with Deno and WebSockets

Convert HTML to Markdown Online

HTML entity encoder decoder Online

Offshore Software Development - Best Practices

To make the most out of the benefits of offshore software development, you should understand the crucial factors that affect offshore development.

Role of Big Data in Healthcare - DZone Big Data

In this article, see the role of big data in healthcare and look at the new healthcare dynamics. Big Data is creating a revolution in healthcare, providing better outcomes while eliminating fraud and abuse, which contributes to a large percentage of healthcare costs.

Silly mistakes that can cost ‘Big’ in Big Data Analytics

‘Data is the new science. Big Data holds the key answers’ - Pat Gelsinger The biggest advantage that the enhancement of modern technology has brought

Big Data can be The ‘Big’ boon for The Modern Age Businesses

We need no rocket science in understanding that every business, irrespective of their size in the modern-day business world, needs data insights for its expansion. Big data analytics is essential when it comes to understanding the needs and wants of a significant section of the audience.

Data Science Course in Dallas

Become a data analysis expert using the R programming language in this [data science](https://360digitmg.com/usa/data-science-using-python-and-r-programming-in-dallas "data science") certification training in Dallas, TX. You will master data...