YARN-10515. Fix flaky test TestCapacitySchedulerAutoQueueCreation.testDynamicAutoQueueCreationWithTags. Contributed by Peter Bacsko

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/scheduler/capacity/TestCapacitySchedulerAutoCreatedQueueBase.java

@@ -52,6 +52,7 @@ import org.apache.hadoop.yarn.server.resourcemanager.placement.QueueMapping.Queu
 import org.apache.hadoop.yarn.server.resourcemanager.rmapp.RMApp;
 import org.apache.hadoop.yarn.server.resourcemanager.rmapp.RMAppEventType;
 import org.apache.hadoop.yarn.server.resourcemanager.scheduler.ContainerUpdates;
+import org.apache.hadoop.yarn.server.resourcemanager.scheduler.QueueMetrics;
 import org.apache.hadoop.yarn.server.resourcemanager.scheduler
     .ResourceScheduler;
 
@@ -205,6 +206,7 @@ public class TestCapacitySchedulerAutoCreatedQueueBase {
 
   @Before
   public void setUp() throws Exception {
+    QueueMetrics.clearQueueMetrics();
     CapacitySchedulerConfiguration conf = setupSchedulerConfiguration();
     setupQueueConfiguration(conf);
     conf.setClass(YarnConfiguration.RM_SCHEDULER, CapacityScheduler.class,