Somanth Veettil shows us how to use Node.js to work with the WebHDFS REST API:
There is an npm module, “node-webhdfs,” with a wrapper that allows you to access Hadoop WebHDFS APIs. You can install the node-webhdfs package using npm:
npm install webhdfs
After the above step, you can write a Node.js program to access this API. Below are a few steps to help you out.
Click through for examples on how the package works.