Configure 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:
- In Cloudera Manager, select Clusters > YARN Queue Manager UI service. A list of existing queues is displayed.
- Click on the Scheduler Configuration tab.
- Select the Enable Asynchronous Scheduler check-box.
- Click Save.