Hadoop is an open-source solution for providing a distributed/replicated file system, a produciton grade map-reduce system, and has a series of complementary additions like Hive, Pig, and HBase to get more out of a Hadoop-powered cluster.

Hadoop is an Apache foundation sponsored project, with commercial support provided by multiple vendors, including Cloudera, Hortonworks, and MapR. Apache has a more complete set of commercial solutions documented.

Available complementary additions to Hadoop include:

  • Hadoop distributed filesystem ( standard )
  • The map-reduce architecture ( standard )
  • Hive, which provides a SQL like interface to the M/R arch
  • Hbase, a distributed key-value service

Recommended reference sources:

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