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What are main the YARN components?

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  • Resource Manager: It runs on a master daemon and controls the resource allocation in the cluster.
  • Node Manager: It runs on the slave daemons and executes a task on each single Data Node.
  • Application Master: It controls the user job lifecycle and resource demands of single applications. It works with the Node Manager and monitors the execution of tasks.
  • Container: It is a combination of resources, including RAM, CPU, Network, HDD, etc., on a single node.

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