MAPREDUCE-7076. TestNNBench#testNNBenchCreateReadAndDelete failing in our internal build

This closes #1089

Signed-off-by: Akira Ajisaka <aajisaka@apache.org>
(cherry picked from commit ee87e9a42e4ff1f27a6f1e5b7c7de97f8989d9b2)

hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-jobclient/src/test/java/org/apache/hadoop/hdfs/NNBench.java

@@ -668,7 +668,7 @@ public class NNBench extends Configured implements Tool {
       long startTime = getConf().getLong("test.nnbench.starttime", 0l);
       long currentTime = System.currentTimeMillis();
       long sleepTime = startTime - currentTime;
-      boolean retVal = false;
+      boolean retVal = true;
       
       // If the sleep time is greater than 0, then sleep and return
       if (sleepTime > 0) {