Hello everyone, Today I’m going to tell you all about ‘Apache Spark Tutorial’. Here, you will know all about Apache Spark, its history, features, limitations and a lot more in detail. In this Apache Spark tutorial, we’ll be seeing an overview of Big Data along with an introduction to the Apache Spark Programming. 

After that, we’ll go through the history of Apache Spark. Furthermore, we will understand the need for Spark. We also cover the main elements of Spark technology. More than that, we will also comprehend the concept of Spark RDD (Resilient Distributed Dataset). To get more insights, we’ll additionally cover Spark Features, Limitations and its Use Cases.  

Now, let’s begin with the understanding of Spark Programming!

What is Spark Programming?

Spark programming is basically a basic purpose and lightning-quick cluster computing framework. Additionally, this is an open-source technology based on a wide range of data processing platforms. 

Moreover, it reveals development APIs that succeed data workers to achieve streaming, ML (Machine Learning) and SQL workloads. It also requires repeated accessibility to the data sets. But, Spark technology can perform stream processing and batch processing. 

Stream processing refers to dealing with data streaming. Whereas batch processing means to process the previously gathered task in a single batch.  

In addition, it is built in such a manner so that it integrates alongside all the tools of Big data. For example, the spark can easily access any data source of Hadoop. Additionally, it can run on any Hadoop clusters. Moreover, Apache Spark stretches out Hadoop MapReduce to the following level. This additionally incorporates stream processing and iterative questions.

One more basic conviction about Spark technology is that it is an expansion of Hadoop. In spite of the fact that that isn't valid. Anyway, Spark is free from Hadoop because it has own cluster management framework. Basically it uses Hadoop for the purpose of storage only.

Even though there is one spark's key element that it has in-memory cluster computation capacity. Also, it speeds up an application processing speed.

Fundamentally, Apache Spark provides high-level APIs to the users, for example, Scala, Java, Python, and R. Hence, Spark is composed in Scala still provides rich APIs in Java, Scala, Python, and R. So, this means, it is a device for running spark applications.

In comparison to Hadoop, Spark 100 times quicker than Hadoop in-Memory mode and in On-Disk mode it is 10 times quicker than Hadoop.

History of Spark Technology 

From the outset, in 2009 Apache Spark was presented in the UC Berkeley R&D Laboratory that is currently called AMPLab. A while later, in 2010 it became open-source technology under the BSD license. Thus, the spark was given to Apache Software Foundation, in 2013. At that point in 2014, it turned into a top-level Apache project.

Reasons to Choose Spark

As we already know, there was no broadly useful processing engine in the business, since –

  • To run batch processing, we will be utilizing Hadoop MapReduce.
  • Besides, to run stream processing, we will be utilizing Apache Storm/S4.
  • Furthermore, for collaborative processing, we will use Apache Tez/Apache Impala.
  • To work with graphs, we will use Apache Giraj/Neo4j 

Thus there was no amazing engine in the world, which can process the data in real-time or batch mode. Additionally, there was a necessity that one engine can react in sub-second and act in-memory processing.

Hence, Spark programming takes place. It is a robust and open-source tool. Since, it provides real-time intuitive processing, in-memory processing, stream processing, graph processing, and batch processing. Indeed, even with extremely quick speed, convenience and standard interface. Usually, these features make the difference between Spark and Hadoop. Moreover provides a tremendous correlation between Spark and Storm.

Elements of Spark Programming 

So, in this Apache Spark tutorial, we talk about the Elements of Spark Programming. It puts the guarantee for quicker data processing and rapid development. So, this is only conceivable due to its elements. All these Spark elements settled the issues that appeared while utilizing Hadoop MapReduce.

So, let’s discuss each Spark Elements –

  • Spark Core

Spark Core is the main element of Spark programming. Essentially, it gives a performance platform to all the Spark software. In addition, to help a wide cluster of apps, Spark offers a generalized platform. 

  • Spark SQL

Next, Spark SQL empowers users to run the SQL or HQL queries. Here, we can process organized and semi-organized data by utilizing Spark SQL. In addition, it can run unmodified inquiries up to 100 times quicker on existing environments.

  • Spark Streaming 

Generally, in all live streaming, Spark Streaming empowers a robust, intelligent and data analytics program. Additionally, the live streams are transformed into micro-batches that are executed on spark core.

  • Spark MLlib

MLlib or Machine Learning Library provides efficiencies and high-end algorithms. Additionally, it is the most blazing decision for a data researcher. Since it is equipped for in-memory data processing. Also, it enhances the performance of the iterative calculation radically.

  • Spark GraphX

Usually, Spark GraphX is a graph algorithm engine based on Spark that empowers to process graph data at a great level.

  • SparkR

Essentially, to utilize Spark from R. It is an R bundle that provides light-weight frontend. Besides, it permits data researchers to investigate enormous datasets. Additionally enables running tasks intuitively on them right from the R shell. 

Role of RDD in Spark

The important feature of Spark is RDD. Basically, the RDD is an shortnening for Resilient Distributed Dataset. It is the fundamental section of data in Spark programming. Essentially, it is an appropriated assortment of components across cluster nodes. Additionally, it performs equal operations. In addition, Spark RDDs are changeless in nature. Even though it can produce new RDD by changing the existing Spark Resilient Distributed Dataset.

How to Create Spark RDD?

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Generally, there are 3 imperative ways to build Spark RDDs!

  • Parallelized technique 

By summoning parallelize strategy in the driver application, we can make parallelized assortments.

  • External Datasets Technique 

One can make Spark RDDs, by applying a textFile strategy. Thus, this technique takes the file URL and peruses it as an assortment of lines.

  • Existing RDDs Technique 

In addition, we can make new RDD in spark technology, by applying transformation procedures on existing RDDs.

Checkout Apache Spark Interview Questions

Features And Functionalities Of Apache Spark

There are a few Apache Spark features:

  • High-Speed Data Processing

Apache Spark provides a higher speed in the data processing. That is about 100x faster in memory as well as 10x faster in the disk. But, it is only conceivable by decreasing the number of read-write to the disk.

  • Extremely Dynamic 

Fundamentally, it is conceivable to build up an equal application in Spark. Since there are 80 high-level administrators accessible in Apache Spark.

  • In-memory processing 

The higher processing speed is conceivable because of in-memory processing. It upgrades the speed of processing.

  • Reusability

We can simply reuse the spark code for batch-processing or link with the stream against chronicled data. Also, it runs the ad-hoc command on the stream level.

  • Spark Fault Support

Spark provides adaptation to internal failure. It is conceivable through the core abstraction of Spark’s RDD. To deal with the failure of any specialist hub in the batch, Spark RDDs are created. In this manner, the loss of data is diminished to zero.

  • Real-time data streaming

We can perform real-time stream processing in the Spark framework. Essentially, Hadoop doesn't support real-time processing. But, it can process the data that is already present. Subsequently, with Spark Streaming, we can easily resolve the issue.

  • Lazy in Nature

All the changes we make in Spark Resilient Distributed Dataset are Lazy in nature. That is it doesn't provide the outcome immediately rather another RDD is framed from the current one. Along these lines, this builds the productivity of the framework.

  • Support Multiple Technology 

Spark underpins numerous languages. For example, R, Java, Python, Scala. Consequently, it shows dynamicity. Additionally, it likewise defeats the confinements of Hadoop since it will create apps in Java.

  • Integration with Hadoop

As we already know Spark is adaptable, so it will run autonomously and furthermore on Hadoop YARN Cluster Manager. Indeed, even it can peruse existing Hadoop data.

  • GraphX by Spark

In Spark, an element for a graph or parallel computation, we have a robust tool known as GraphX. Usually, it disentangles the graph analytics errands by the assortment of graph builders and algorithms.

  • Reliable and Cost-effective 

For Big data issues as in Hadoop, a lot of storage and the huge data place is needed during replication. Thus, Spark programming ends up being a financially savvy solution.

Major benefits of using Apache Spark:

Apache Spark has reconstructed the definition of Big Data. Furthermore, it is an extremely active big data appliance reconstructing the market of big data. This open-source platform provides more compelling benefits than any other exclusive solutions. The distinct benefits of Apache Spark make it a highly engaging big data framework. 

Apache Spark has enormous skills to contribute to the big data-based business in the world. 

Let’s discuss some of the benefits of Spark technology:

Benefits of Using Apache Spark:

  • Speed
  • Ease of Use
  • High-level Analytics
  • Dynamic in Nature
  • Multilingual
  • Apache Spark is powerful
  • Extended access to Big data
  • Demand for Apache Spark Developers
  • Open-source Technology

Speed

While talking about Big Data, the processing speed constantly matters a lot. Apache Spark is very familiar with data scientists due to its speed. Spark can manage various petabytes of clustered data of over 8000 nodes at a single time. 

Ease of Use

Apache Spark provides easy-to-use APIs for running on huge datasets. Additionally, it provides more than 80 high-end operators that can make it simple to develop parallel applications.

High-level Analytics

Spark not only carries ‘MAP’ or ‘reduce’. Moreover, it supports Machine learning, Streaming data, Graph algorithms, SQL queries, and more.

Dynamic in Nature

With Spark, you can simply create parallel apps. Spark provides you more than 80 high-end operators.

Multilingual

Apache Spark framework supports various languages for coding such as Java, Python, Scala, and more.

Apache Spark is powerful

Apache Spark can manage various analytics tests because it has low-latency in-memory data processing skills. Furthermore, it has well-built libs for graph analytics algorithms including machine learning (ML).

Extended access to Big data

Apache Spark framework is opening up numerous possibilities for big data and development. Recently, a survey organized by IBM’s stated that it will teach over 1 million data technicians plus data scientists on Spark. 

Demand for Apache Spark Developers:

Apache Spark can help you and your business in a variety of ways. Spark engineers are highly demanded in organizations providing attractive perks and offering flexible working hours to hire professionals. According to the PayScale, the average wage for Data Engineer with Spark jobs is $100,362. 

Open-source technology:

The most helpful thing about Spark is, it has a large open-source technology behind it. 

I hope now you know some of the essential benefits of Apache spark. Now, let’s understand the use cases of Apache Spark. This will represent some more useful insight. 

Use Cases

There are various business-centric use cases of Apache Spark. Let’s talk about in detail – 

a. Use Cases of Spark in the Finance Business

There are numerous banks that are utilizing Spark. Fundamentally, it allows access and identifies a lot of the parameters in the banking industry like the social media profiles, emails, forums, calls recordings and some more. Hence, it also helps to make the right decisions for a few zones.

b. Use Cases of Apache Spark in E-Commerce Domain

Essentially, it assists with data about a real-time transaction. Besides, those are being passed to stream clustering algorithms.

c. Use Cases of Apache Spark in Media and Entertainment World

We use Spark to distinguish designs from the real-time in-game occasions. Also, it allows reacting to harvesting worthwhile business opportunities.

d. Apache Spark Use Cases in the Travel Industry

Generally, travel ventures are utilizing spark contentiously. Besides, it causes clients to design an ideal trip by increasing customized recommendations. 

Conclusion 

Now, we’ve seen every element of Apache Spark. Right from what is Apache spark programming and its definition, History, why it is required, Apache Spark Elements, Spark RDD, Features, Spark Streaming, Limitations, and use cases. 

So, in this Apache Spark tutorial, we have tried to cover in-depth Spark analysis. So, we hope you will get all the required information on it. And, if you want to know more about it, and want to ask something or we’ve missed anything to mention, do let us know in the comment section. We would love to hear from you.