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Learning YARN by Shrey Mehrotra, Akhil Arora

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The NodeManager's view

The NodeManager service in YARN updates its resource capabilities to the ResourceManager and tracks the execution of containers running on the node.

Other than the health of a node, the NodeManager service is responsible for the following:

  • Execution of an application and its associated containers
  • Provide localized resources for the execution of containers related to applications
  • Manage logs of different applications

The NodeManager service has its own view for the following:

  • Application: This manages the application's execution, logs, and resources
  • Container: This manages the execution of containers as a separate process
  • Localized resource: This involves the files required for the container's execution

View 1 – Application

NodeManager ...

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