Use Ambari Web to
refresh the YARN Capacity Scheduler when you add or modify existing queues.
After you modify the Capacity Scheduler configuration, YARN
enables you to refresh the queues without restarting your ResourceManager, if you have made
no destructive changes (such as completely removing a queue) to your configuration. The
Refresh operation will fail with the following message: Failed to re-init
queues if you attempt to refresh queues in a case where you performed a
destructive change, such as removing a queue. In cases where you have made destructive
changes, you must perform a ResourceManager restart for the capacity scheduler change to
take effect. To refresh the Capacity Scheduler, follow these steps:
In Ambari Web, browse to .
Confirm that you want to perform this operation.
The refresh operation is submitted to the YARN ResourceManager.