HDFS-4396. Add START_MSG/SHUTDOWN_MSG for ZKFC. Contributed by Liang Xie.

(cherry picked from commit ae3e8c61ff4c926ef3e71c782433ed9764d21478)

hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt

@@ -8,6 +8,9 @@ Release 2.8.0 - UNRELEASED
 
   IMPROVEMENTS
 
+    HDFS-4396. Add START_MSG/SHUTDOWN_MSG for ZKFC
+    (Liang Xie via harsh)
+
     HDFS-7875. Improve log message when wrong value configured for
     dfs.datanode.failed.volumes.tolerated.
     (nijel via harsh)

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/tools/DFSZKFailoverController.java

@@ -167,6 +167,8 @@ public class DFSZKFailoverController extends ZKFailoverController {
 
   public static void main(String args[])
       throws Exception {
+    StringUtils.startupShutdownMessage(DFSZKFailoverController.class,
+        args, LOG);
     if (DFSUtil.parseHelpArgument(args, 
         ZKFailoverController.USAGE, System.out, true)) {
       System.exit(0);