Spark Basics

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.

Collect() is an action that returns all the elements of the RDD to the driver program. The collect() function returns all the dataset elements as an array at the driver program. This is usually helpful after a filter or other operation that returns an adequately small subset of the data. Learn Spark Basics and its function in detail by enrolling in Great Learning’s free Spark Basics course and achieving a free certificate of course completion.

Yes, you will get a certificate of completion for Spark Basics after completing all the modules and cracking the assessment. The assessment tests your knowledge of the subject and badges your skills.

It is an entirely free course from Great Learning Academy. Anyone interested in learning the basics of Spark Basics can get started with this course.

Once you enroll in the Spark Basics course, you have lifetime access to it. So, you can log in anytime and learn it for free online.

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.