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Purchases are allowed by credit card. You may sign up and then enroll for a course and make a payment online. You may also call in at our US phone number and provide you credit card details to get enrolled for a course. In the latter case, our service desk agent will register you for the course by creating a login id and a temporary password for you.

As a security measure, we never store credit card details in our database or on any paper file.


You may request a full refund on any instructor-led course before the start of the course or within seven days after the start of the course. No refunds are possible on self-paced courses. You can submit a refund request at our Support page. Your case will be evaluated. We reserve the right to refuse a refund if we determine that it is a violation of our Terms and Conditionssuch as abuse of copyright or illegal use of our educational material.

All decisions on refunds are made by the Hadoop Express will be final. 

In order to request a refund, please visit our Support page and leave a message. Alternatively, use the live chat to seek help from a service agent.

Hadoop is a registered trademark of the Apache Software Foundation(ASF) and Hadoop is a product owned by Apache. Hadoop Express is not affiliated in any way to ASF . All educational material, resources, videos and other content available on this site is created and owned by Net Serpents and is intended only to provide training. This website does not own any of the products on which it provides training, many of which are owned by Apache while others are owned companies such as SAS, Python and Oracle. Net Serpents LLC is committed to education and online learning. All recognizable terms, names of software, tools, programming languages that appear on this site belong to the respective copyright and/or trademark owners.