HDFS-8431. hdfs crypto class not found in Windows. Contributed by Anu Engineer.

(cherry picked from commit 50eeea13000f0c82e0567410f0f8b611248f8c1b)

Conflicts:
	hadoop-hdfs-project/hadoop-hdfs/src/main/bin/hdfs.cmd

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

@@ -473,6 +473,9 @@ Release 2.8.0 - UNRELEASED
     HDFS-8268. Port conflict log for data node server is not sufficient
     (Mohammad Shahid Khan via vinayakumarb)
 
+    HDFS-8431. hdfs crypto class not found in Windows.
+    (Anu Engineer via cnauroth)
+
 Release 2.7.1 - UNRELEASED
 
   INCOMPATIBLE CHANGES

hadoop-hdfs-project/hadoop-hdfs/src/main/bin/hdfs.cmd

@@ -58,7 +58,8 @@ if "%1" == "--loglevel" (
       exit /b
     )
   )
-  set hdfscommands=dfs namenode secondarynamenode journalnode zkfc datanode dfsadmin haadmin fsck balancer jmxget oiv oev fetchdt getconf groups snapshotDiff lsSnapshottableDir cacheadmin mover storagepolicies classpath
+
+  set hdfscommands=dfs namenode secondarynamenode journalnode zkfc datanode dfsadmin haadmin fsck balancer jmxget oiv oev fetchdt getconf groups snapshotDiff lsSnapshottableDir cacheadmin mover storagepolicies classpath crypto
   for %%i in ( %hdfscommands% ) do (
     if %hdfs-command% == %%i set hdfscommand=true
   )
@@ -174,6 +175,10 @@ goto :eof
   set CLASS=org.apache.hadoop.hdfs.tools.StoragePolicyAdmin
   goto :eof
 
+:crypto
+  set CLASS=org.apache.hadoop.hdfs.tools.CryptoAdmin
+  goto :eof
+
 @rem This changes %1, %2 etc. Hence those cannot be used after calling this.
 :make_command_arguments
   if "%1" == "--config" (
@@ -226,6 +231,7 @@ goto :eof
   @echo   lsSnapshottableDir   list all snapshottable dirs owned by the current user
   @echo 						Use -help to see options
   @echo   cacheadmin           configure the HDFS cache
+  @echo   crypto               configure HDFS encryption zones
   @echo   mover                run a utility to move block replicas across storage types
   @echo   storagepolicies      list/get/set block storage policies
   @echo.