Friday, December 28, 2012

Apache Hadoop


Apache Hadoop is an open source software project that enables the distributed processing of large data sets across clusters of commodity servers. It is designed to scale up from a single server to thousands of machines, with a very high degree of fault tolerance. Rather than relying on high-end hardware, the resiliency of these clusters comes from the software’s ability to detect and handle failures at the application layer.


The project includes these modules:
  1. Hadoop Common: The common utilities that support the other Hadoop modules.
  2. Hadoop Distributed File System (HDFS™): A distributed file system that provides high-throughput access to application data.
  3. Hadoop YARN: A framework for job scheduling and cluster resource management.
  4. Hadoop MapReduce: A YARN-based system for parallel processing of large data sets.

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