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What are the main components of a Hadoop Application?

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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:

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