Apache Hadoop Interview Questions and Answers

Apache Hadoop is an open source software framework for storage and large data scale processing of data sets on clusters of commodity hardware. It is designed to scale up from single servers to thousands of machine, each offering local computation and storage. Rather than rely on hardware to deliver high-availability, the library itself is designed to detect and handle failures at the application layer, so delivering a highly-available service on top of a cluster of computers, each of which may be prone to failures.-(Apache Hadoop official site)

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