What are the running modes of Hadoop ?

The three running modes of Hadoop are as follows:

Standalone or local Mode

  • This is the default mode and does not need any configuration.
  • In this mode, all the following components of Hadoop uses local file system and runs on a single JVM
    • NameNode
    • DataNode
    • ResourceManager
    • NodeManager
  • Suitable for running MapReduce programs during development.
  • Has no DFS
Standalone or local Mode

Pseudo-distributed Mode

  • In this mode, all the master and slave Hadoop services are deployed and executed on a single node.
Pseudo - distributed mode

Fully distributed Mode

  • In this mode, Hadoop master and slave services are deployed and executed on separate nodes.
Fully distributed Mod

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