Where can I learn Hadoop online for free?

There are several online platforms that offer free resources to learn Hadoop. Here are some options where you can find tutorials, courses, and documentation for learning Hadoop online:

1. Hadoop Official Documentation:

   • The official documentation from the Apache Hadoop project provides comprehensive guides, tutorials, and references. It's a great starting point to understand the core concepts and components.
   • Apache Hadoop Documentation

2. edX - Introduction to Big Data with Apache Hadoop:

   • This free edX course by Linux Foundation provides an introduction to big data concepts, including Apache Hadoop. It covers Hadoop Distributed File System (HDFS), MapReduce, and other Hadoop-related technologies.
   • Introduction to Big Data with Apache Hadoop

3. Udacity - Introduction to Hadoop and MapReduce:

   • Udacity offers a free course that provides an introduction to Hadoop and MapReduce. It includes video lectures, quizzes, and hands-on exercises using a virtual machine.
   • Introduction to Hadoop and MapReduce

4. Coursera - Big Data Specialization by University of California, San Diego:

   • The Big Data Specialization on Coursera covers various aspects of big data, including Hadoop. While some courses in the specialization may require payment, you can often audit the courses for free to access the content.
   • Big Data Specialization

5. Cloudera OnDemand Training - Fundamentals of Hadoop:

   • Cloudera, a company specializing in big data technologies, offers free on-demand training courses. The "Fundamentals of Hadoop" course covers basic concepts and includes video lectures.
   • Cloudera OnDemand Training

6. Big Data University:

   • Big Data University offers free courses on various big data technologies, including Hadoop. The courses are self-paced, and you can access them after creating a free account.
   • Big Data University

7. YouTube Tutorials:

   • Numerous YouTube channels provide free tutorials on Hadoop. Channels like edureka! and HadoopOnlineTutorials offer video content covering Hadoop concepts, installations, and practical examples.
   • edureka! Hadoop Tutorials

8. GitHub Repositories:

   • Explore GitHub repositories that provide Hadoop examples, tutorials, and sample projects. Many developers share their code and projects, offering valuable insights into real-world implementations.
   • Hadoop GitHub Repositories

Remember to combine theoretical knowledge with hands-on practice. Setting up a small Hadoop cluster, working on projects, and exploring datasets will enhance your understanding and skills. Additionally, participating in forums and communities like Stack Overflow can be beneficial when seeking help or clarifications during your learning journey.