YARN-9784. org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.TestLeafQueue is flaky. Contributed by Julia Kinga Marton.

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

@@ -214,12 +214,12 @@ public class TestLeafQueue {
     cs.setRMContext(spyRMContext);
     cs.init(csConf);
     cs.setResourceCalculator(rC);
-    cs.start();
 
     when(spyRMContext.getScheduler()).thenReturn(cs);
     when(spyRMContext.getYarnConfiguration())
         .thenReturn(new YarnConfiguration());
     when(cs.getNumClusterNodes()).thenReturn(3);
+    cs.start();
   }