YARN-6759. Fix TestRMRestart.testRMRestartWaitForPreviousAMToFinish failure. Contributed by Naganarasimha G R

(cherry picked from commit 75c0220b4494dd4424a0c531e0bf0a763748dc62)

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/TestRMRestart.java

@@ -105,9 +105,9 @@ import org.apache.hadoop.yarn.server.resourcemanager.rmapp.RMAppState;
 import org.apache.hadoop.yarn.server.resourcemanager.rmapp.attempt.RMAppAttempt;
 import org.apache.hadoop.yarn.server.resourcemanager.rmapp.attempt.RMAppAttemptState;
 import org.apache.hadoop.yarn.server.resourcemanager.rmnode.RMNode;
+import org.apache.hadoop.yarn.server.resourcemanager.scheduler.AbstractYarnScheduler;
 import org.apache.hadoop.yarn.server.resourcemanager.scheduler.QueueMetrics;
 import org.apache.hadoop.yarn.server.resourcemanager.scheduler.TestSchedulerUtils;
-import org.apache.hadoop.yarn.server.resourcemanager.scheduler.AbstractYarnScheduler;
 import org.apache.hadoop.yarn.server.resourcemanager.scheduler.YarnScheduler;
 import org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.CapacityScheduler;
 import org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.TestUtils;
@@ -617,7 +617,7 @@ public class TestRMRestart extends ParameterizedSchedulerTestBase {
             return new Boolean(rmAppForCheck.getAppAttempts().size() == 4);
           }
         },
-        100, maxRetry);
+        100, maxRetry * 100);
     Assert.assertEquals(RMAppAttemptState.FAILED,
         rmApp.getAppAttempts().get(latestAppAttemptId).getAppAttemptState());