Managing and Allocating Cluster Resources using Capacity SchedulerPDF version

Enable asynchronous scheduler

Asynchronous scheduler decouples the CapacityScheduler scheduling from Node Heartbeats. This improves the latency significantly.

To enables asynchronous scheduling (yarn.scheduler.capacity.schedule-asynchronously.enable), perform the following:

  1. In Cloudera Manager, select Clusters > YARN Queue Manager UI service. A graphical queue hierarchy is displayed in the Overview tab.
  2. Click on the Scheduler Configuration tab.
  3. Select the Enable Asynchronous Scheduler check-box.
  4. Click Save.