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Hadoop Tutorial

Container

  • It is a set of physical resources on a single node, including RAM, CPU cores, and disks.

  • YARN containers are managed by a container launch context which is container life-cycle (CLC). This record contains dependencies stored in remotely accessible storage, a map of environment variables, and the payload for Node Manager Services, security tokens, and the command necessary to create the process.

  • This grants application rights to use a certain amount of resources (memory, CPU, etc.)on a particular host.