Memory Calculations In Spark

 



  • Dynamic Resource Allocator(DRA)-Spark itself take care of memory calculations which highly not prefer.
  •  Cores: No of concurrent tasks that can be executed in each node.
    • 5 cores which means 5 parallel tasks can execute for a executor.
  • No of executors=(Total no of cores)/(No of cores in a node)
  • Executor Memory=((RAM)/(No of executors))-(Yarn Memory(2gb))=x
    • Executor memory range is (no of cores-x)
  • Driver Memory varies based on condition.

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