Deep dive into YARN Scheduler options

  • Jobs are executed based on FIFO principle and ignores the priority value.
  • It is not suitable for shared clusters because large applications will use all the resources and other applications has to wait for it turn.
  • More complex.
  • Not easy to configure for everyone.
  1. Preemption is enabled at YARN service level via the Enable Fair Scheduler Preemption (yarn.scheduler.fair.preemption) configuration. Using the preemption timeout mentioned in seconds.
  2. Cluster level resource utilization exceeds the Fair Scheduler Preemption Utilization Threshold (yarn.scheduler.fair.preemption.cluster-utilization-threshold) which defaults to 80%.




Data Engineer

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Karthik Sharma

Karthik Sharma

Data Engineer

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