Apache Hadoop – Free Java-Based Programming Framework
Apache Hadoop is a free Java-based programming framework that supports the processing of large data sets in a distributed computing environment. It develops open-source software for reliable, scalable, distributed computing. Also it allows companies such as Facebook and Twitter to easily process huge amounts of data.
The Apache Hadoop software library is a framework that allows for the distributed processing of large data sets across clusters of computers using a simple programming model. It is designed to scale up from single servers to thousands of machines, each offering local computation and storage. Rather than rely on hardware to deliver high-avaiability, the library itself is designed to detect and handle failures at the application layer, so delivering a highly-availabile service on top of a cluster of computers, each of which may be prone to failures.
A distributed file system (DFS) facilitates rapid data transfer rates among nodes and allows the system to continue operating uninterrupted in case of a node failure. The risk of catastrophic system failure is low, even if a significant number of nodes become inoperative.
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