What are the main components of a Hadoop Application?

Over the time, there are various forms in which a Hadoop application is defined. But in most of the cases there are following four core components of Hadoop application:

  • HDFS: This is the file system in which Hadoop data is stored. It is a distributed file system with very high bandwidth.
  • Hadoop Common: This is common set of libraries and utilities used by Hadoop.
  • Hadoop MapReduce: This is based on MapReduce algorithm for providing large-scale data processing.
  • Hadoop YARN: This is used for resource management in a Hadoop cluster. It can also schedule tasks for users.
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