YARN-7132. FairScheduler.initScheduler() contains a surprising unary plus. (Yeliang Cang via Haibo Chen)

(cherry picked from commit fa531788fd7c9eee70808818a2f6aec9bdc3bec7)

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/scheduler/fair/FairScheduler.java

@@ -1320,7 +1320,7 @@ public class FairScheduler extends
         updateInterval = FairSchedulerConfiguration.DEFAULT_UPDATE_INTERVAL_MS;
         LOG.warn(FairSchedulerConfiguration.UPDATE_INTERVAL_MS
             + " is invalid, so using default value "
-            + +FairSchedulerConfiguration.DEFAULT_UPDATE_INTERVAL_MS
+            + FairSchedulerConfiguration.DEFAULT_UPDATE_INTERVAL_MS
             + " ms instead");
       }