Setting global application limits
To avoid system-thrash due to an unmanageable load -- caused either by malicious users, or by accident -- the Capacity Scheduler enables you to place a static, configurable limit on the total number of concurrently active (both running and pending) applications at any one time.
You can set the maximum applications limit (yarn.scheduler.capacity.maximum-applications) using this configuration property. The default value is 10,000.
- In Cloudera Manager, select Clusters > YARN Queue Manager UI service. A graphical queue hierarchy is displayed in the Overview tab.
- Click on the Scheduler Configuration tab.
- Enter the maximum application limit in the Maximum Applications text box.
- Click Save.
For information about overriding this limit on a per-queue basis, see Set Application limit for a specific queue.