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http : / /hadoop . apache . org/

What Is Apache Hadoop?

The ApacheTM Hadoopo' project develops open-source software for reliable,scalable, distributed computing.

The Apache Hadoop software library is a framework that allows for thedistributed processing of large data sets across clusters of computers usingsimple programming models. It is designed to scale up from single servers tothousands of machines, each offering local computation and storage. Ratherthan rely on hardware to deliver high-availability, the library itself is designedto 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 proneto failures.

The project includes these modules:

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Hadoop Commona The common utilities that support the other Hadoopmodules.

Hadoop Distributed File System (HDFSTM): A distributed file system thatprovides high-throughput access to application data.Hadoop YARN: A framework for job scheduling and cluster resourcemanagement.

Hadoop MapRpdure: A YARN-based system for parallel processing oflarge data sets.

Co-founders: Doug Cutting and Mike Cafarella, January 2006

(Doug Cutting named the system after his son's toy elephant.)

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