Do You Need Java To Learn Hadoop?

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Nov 26, 2015
Do You Need Java To Learn Hadoop?
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When Doug Cutting, the creator of Hadoop, named his new framework after his son’s toy elephant, little did he know that it would take the open source software world by storm. Today, we can also presume that Doug did not wish to create an elephantine misconception about Java being required to master Hadoop. True, Hadoop is built on Java. But do you need Java to learn Hadoop? This blog answers the question for you.

Do you need Java to learn Hadoop?

Two important Hadoop components endorse the fact that you can work with Hadoop without having functional knowledge of Java – Pig and Hive.

Pig is a high-level data flow language and execution framework for parallel computation, while Hive is a data warehouse infrastructure that provides data summarization and ad- hoc querying. Pig is widely used by researchers and programmers while Hive is a favourite with data analysts.

10 lines of Pig = 200 lines of Java. Check out this blog for a Pig demo.

In order to navigate through Pig and Hive, you only need to learn Pig Latin and Hive Query Language (HQL), both of which need only an SQL base. Pig Latin is very similar to SQL, while HQL can best be described as a much faster and more tolerant avatar of SQL. These languages are easy to learn, and more than 80% of Hadoop projects revolve around them

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Hadoop has become the poster boy of Big Data. With its ability to store huge amounts of data – both structured and unstructured – on the cloud, with lesser capital investment, Hadoop is on top of every CIO’s to-do list, today. This had led to a burgeoning growth in career opportunities around Hadoop.

In order to explore job roles related to Hadoop without having Java as a prerequisite, you need to just orient yourself to two critical aspects of Hadoop; Storage and Processing. For a job around Hadoop storage, you can learn how Hadoop cluster functions, and how Hadoop makes its data secure and stable. For this, knowing the various nuances of the Hadoop Distributed File System (HDFS) and HBase, Hadoop’s distributed database, will help tremendously.

If you choose to work on the processing side of Hadoop, you have Pig and Hive at your disposal, that automatically convert your code in the backend to work with the Java-based MapReduce cluster programming model.

So, without running MapReduce, you can still control the entire life cycle of your project. As long as you master Pig and Hive, along with HDFS and HBase, Java can take a backseat.

The Big Data and Hadoop training course from Edureka is designed to enhance your knowledge and skills to become a successful Hadoop developer. Click here in case you wish to know more.

Rare requirements for Java coding

However, Java coding is needed if you wish to add user-defined functions to Pig, Hive and other tools. This is required only if you wish to create custom input/output formats. We are happy to inform that this requirement is a rarity.

Another rare scenario where basic Java coding might be necessary is for debugging. In the rare event of a Hadoop program crashing, you might need to debug the program using Java. It’s a fair guess how insignificant a debugging role is going to be, in your career.

Still not convinced that you can learn Hadoop without knowing Java? Watch the webinar below and learn how Hadoop is relevant for a person from a non-programming background!

With its innovative course delivery backed by industry-renowned practitioners, Edureka has helped more than 250,000 professionals upgrade their skills across 80+ specially designed courses. From its inception in 2011, more than 50,000 hours of classes have been delivered on the Edureka platform.

Related Posts:

Get Started with Big Data and Hadoop

A Deep Dive Into Pig

Setting up a Multi Node Cluster in Hadoop 2.X

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8 Comments
  • Eti

    Hi Vishnu,
    I have a 5 years of experience as Mainframe developer . I know SQL and plsql. So can I learn Hadoop ?
    please suggest which technology will be better for me to boost my growth in IT services.

    • EdurekaSupport

      Hey Eti, thanks for checking out our blog.
      While knowledge of core Java and SQL are beneficial to learn Hadoop, it’s not mandatory. Also, we provide you with a complimentary self-paced course on Java essentials for Hadoop when you enroll for our course so you don’t need to worry.
      We have examples of our learners from Mainframe backgrounds going on to learn Hadoop and get into a Big Data career path. You can check out our course details here: https://www.edureka.co/big-data-and-hadoop. Hope this helps. Cheers!

  • Purvi

    Hi vishnu,
    I know oracle sql and plsql, unix.but not having knowledge of Java. So can i learn hadoop?

    • EdurekaSupport

      Hey Purvi, thanks for checking out our blog. There are no pre-requisites as such to learn Hadoop. Knowledge of core Java and SQL help, but it’s not mandatory. In fact, we also provide a complementary self-paced course on Java essentials for Hadoop when you enroll for our Hadoop certification course. You can check out more details here: https://www.edureka.co/big-data-and-hadoop. Please feel free to reach out to us if you have any questions or doubts. Alternatively, you can reach out to us at +91 88808 62004 24X7. Hope this helps. Cheers!

  • Darshan Raj

    Hi Vishnu,
    This was a nice article.
    I am working as an Associate Web Developer for the past 2 years, I have no exprience working in Java and I want to switch to Hadoop, how is the career opportunities for a fresher in this field?
    Thanks in advance!

    • EdurekaSupport

      Hey Darshan, thanks for checkin gout our blog. We’re glad you liked it.
      Core Java knowledge helps while learning Hadoop, but it’s not mandatory.
      However, considering your background in web development, you can go for AngularJS 2 Certification Training to boost your career growth. You can check out more details here: https://www.edureka.co/angular-js. Please feel free to reach out to us if you have any questions or doubts. Alternatively, you can reach out to us at +91 88808 62004 24X7. Hope this helps. Cheers!

  • Shailesh Tiwari

    Hi Vishnu,
    I am a .NET developer with around 10 years of experience, I am trying to peruse in Bigdata/Hadoop however want to understand the technical difficulty (out of 10) in switching from Microsoft to Hadoop envrionment.

    • EdurekaSupport

      Hey Shailesh, thanks for checking out our blog. Considering your background, you could use Hadoop in Microsoft Azure which would be easier. But, to work on the more widely used Hadoop environment, some experience working on a Linux environment would be beneficial. While there are no pre-requisites as such to learn Hadoop, basic Java/Python knowledge would help you. If you do not have Java knowledge then, you do not need to worry, as there are Hadoop ecosystem tools such as Pig and Hive which are similar to SQL that you can work on. Also, when you enroll in our Hadoop course, we even provide you with a complementary self-paced course on Java essentials for Hadoop, so it won’t be a problem. You can check out more course details here: https://goo.gl/kESJoF. Hope this helps. Cheers!

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