Set default Application Master resource limit
The Application Master (AM) resource limit that can be used to set a maximum percentage of cluster resources allocated specifically to Application Masters. This property has a default value of 10%, and exists to avoid cross-application deadlocks where significant resources in the cluster are occupied entirely by the Containers running ApplicationMasters.
The Maximum AM Resource Limit (yarn.scheduler.capacity.maximum-am-resource-percent) property also indirectly controls the number of concurrent running applications in the cluster, with each queue limited to a number of running applications proportional to its capacity.
- 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 AM resource limit in the Maximum AM Resource Limit text box.
For information about overriding this limit on a per-queue basis, see Configure Application Master resource limit for a specific queue.