HADOOP-11634. Description of webhdfs' principal/keytab should switch places each other. Contributed by Brahma Reddy Battula.

(cherry picked from commit e9ac88aac77dd98508854de445793c2180466ee8)

hadoop-common-project/hadoop-common/CHANGES.txt

@@ -614,6 +614,9 @@ Release 2.7.0 - UNRELEASED
     HADOOP-9922. hadoop windows native build will fail in 32 bit machine.
     (Kiran Kumar M R via cnauroth)
 
+    HADOOP-11634. Description of webhdfs' principal/keytab should switch places
+    each other. (Brahma Reddy Battula via ozawa)
+
 Release 2.6.1 - UNRELEASED
 
   INCOMPATIBLE CHANGES

hadoop-common-project/hadoop-common/src/site/markdown/SecureMode.md

@@ -289,8 +289,8 @@ The following properties should be in the `core-site.xml` of all the nodes in th
 
 | Parameter | Value | Notes |
 |:---- |:---- |:---- |
-| `dfs.web.authentication.kerberos.principal` | http/\_HOST@REALM.TLD | Kerberos keytab file for the WebHDFS. |
-| `dfs.web.authentication.kerberos.keytab` | */etc/security/keytab/http.service.keytab* | Kerberos principal name for WebHDFS. |
+| `dfs.web.authentication.kerberos.principal` | http/\_HOST@REALM.TLD | Kerberos principal name for the WebHDFS. |
+| `dfs.web.authentication.kerberos.keytab` | */etc/security/keytab/http.service.keytab* | Kerberos keytab file for WebHDFS. |
 
 ### ResourceManager