YARN-6618. TestNMLeveldbStateStoreService#testCompactionCycle can fail if compaction occurs more than once. Contributed by Jason Lowe.

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/src/test/java/org/apache/hadoop/yarn/server/nodemanager/recovery/TestNMLeveldbStateStoreService.java

@@ -943,7 +943,7 @@ public class TestNMLeveldbStateStoreService {
     };
     store.init(conf);
     store.start();
-    verify(mockdb, timeout(10000)).compactRange(
+    verify(mockdb, timeout(10000).atLeastOnce()).compactRange(
         (byte[]) isNull(), (byte[]) isNull());
     store.close();
   }