Spark Basics

Yes, you can enroll in as many courses as you want from Great Learning Academy. There is no limit to the number of courses you can enroll in at once, but since the courses offered by Great Learning Academy are free, we suggest you learn one by one to get the best out of the subject.

Great Learning Academy provides this Spark Basics course for free online. The course is self-paced and helps you understand various topics that fall under the subject with solved problems and demonstrated examples. The course is carefully designed, keeping in mind to cater to both beginners and professionals, and is delivered by subject experts. Great Learning is a global ed-tech platform dedicated to developing competent professionals. Great Learning Academy is an initiative by Great Learning that offers in-demand free online courses to help people advance in their jobs. More than 5 million learners from 140 countries have benefited from Great Learning Academy's free online courses with certificates. It is a one-stop place for all of a learner's goals.

Enrolling in any of the Great Learning Academy’s courses is just one step process. Sign-up for the course, you are interested in learning through your E-mail ID and start learning them for free online.

Yes, once you enroll in the course, you will have lifetime access, where you can log in and learn whenever you want to. 

Spark is a fast, general, and multi-language engine for large-scale data processing. It is designed to cover a wide range of workloads such as batch processing, interactive queries, and streaming. It has a simple and expressive programming model that supports various applications. Spark is scalable, and it can run on a single machine or a cluster of thousands of machines.

To start with Spark, first, be familiar with the programming languages that are utilized to implement it, like Python or other programming languages. You can start learning it by going through a few helpful tutorials, blog posts, articles, or by stepping a step ahead you can enroll in the free Spark Basics course Great Learning offers and learn it from scratch.

No, Databricks is not the same as Spark. Databricks is a cloud-based platform for data analytics, while Spark is an open-source data processing engine. Databricks has a modified spark instance as a core known as Databricks Runtime.

RDD stands for Resilient Distributed Dataset. It is the primary data structure in Apache Spark. RDDs are immutable, meaning they cannot be changed after they are created. RDD is a fault-tolerant group of elements that can be operated in parallel. They are generated by transforming existing datasets.

Spark and Scala are both open-source projects. Spark comes under a general-purpose data processing engine that can be used for a variety of data processing tasks, such as batch processing, real-time processing, and machine learning. Scala is a programming language that can be used to create Spark applications.

Reduced by key in Spark is a transformation that returns a new dataset where the values for each key are aggregated using a user-defined function. It is helpful in many ways as it helps to remove a lot of duplicate data and helps to handle large data sets. You can learn more about such functions in Spark by enrolling in Great Learning’s free Spark Basics course.