diff --git hadoop-yarn-project/hadoop-yarn/hadoop-yarn-common/src/main/resources/yarn-default.xml hadoop-yarn-project/hadoop-yarn/hadoop-yarn-common/src/main/resources/yarn-default.xml
index ea1afe4..33cd919 100644
--- hadoop-yarn-project/hadoop-yarn/hadoop-yarn-common/src/main/resources/yarn-default.xml
+++ hadoop-yarn-project/hadoop-yarn/hadoop-yarn-common/src/main/resources/yarn-default.xml
@@ -908,6 +908,64 @@
600000
+
+
+ If true, run the policy but do not affect the cluster with preemption and kill events.
+
+ yarn.resourcemanager.monitor.capacity.preemption.observe_only
+ false
+
+
+
+
+ Time in milliseconds between invocations of this ProportionalCapacityPreemptionPolicy
+ policy.
+
+ yarn.resourcemanager.monitor.capacity.preemption.monitoring_interval
+ 3000
+
+
+
+
+ Time in milliseconds between requesting a preemption from an application and killing
+ the container.
+
+ yarn.resourcemanager.monitor.capacity.preemption.max_wait_before_kill
+ 15000
+
+
+
+
+ Maximum percentage of resources preempted in a single round. By controlling this valueone
+ can throttle the pace at which containers are reclaimed from the cluster. After computing
+ the total desired preemption, the policy scales it back within this limit.
+
+ yarn.resourcemanager.monitor.capacity.preemption.total_preemption_per_round
+ 0.1
+
+
+
+
+ Maximum amount of resources above the target capacity ignored for preemption.
+ This defines a deadzone around the target capacity that helps prevent thrashing and
+ oscillations around the computed target balance. High values would slow the time to capacity
+ and (absent natural.completions) it might prevent convergence to guaranteed capacity.
+
+ yarn.resourcemanager.monitor.capacity.preemption.max_ignored_over_capacity
+ 0.1
+
+
+
+
+ Given a computed preemption target, account for containers naturally expiring and preempt
+ only this percentage of the delta. This determines the rate of geometric convergence into
+ the deadzone (MAX_IGNORED_OVER_CAPACITY). For example, a termination factor of 0.5 will reclaim
+ almost 95% of resources within 5 * #WAIT_TIME_BEFORE_KILL, even absent natural termination.
+
+ yarn.resourcemanager.monitor.capacity.preemption.natural_termination_factor
+ 0.2
+
+