merge MAPREDUCE-4040 from trunk. History links should use hostname rather than IP address. (Contributed by Bhallamudi Venkata Siva Kamesh)

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1312077 13f79535-47bb-0310-9956-ffa450edef68

hadoop-mapreduce-project/CHANGES.txt

@@ -208,6 +208,9 @@ Release 0.23.3 - UNRELEASED
     MAPREDUCE-4017. Add jobname to jobsummary log (tgraves and Koji Noguchi
     via bobby)
 
+    MAPREDUCE-4040. History links should use hostname rather than IP address.
+    (Bhallamudi Venkata Siva Kamesh via sseth)
+
 Release 0.23.2 - UNRELEASED
 
   INCOMPATIBLE CHANGES

hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-common/src/main/java/org/apache/hadoop/mapreduce/v2/jobhistory/JobHistoryUtils.java

@@ -507,7 +507,7 @@ public class JobHistoryUtils {
     StringBuffer sb = new StringBuffer();
     if (address.getAddress().isAnyLocalAddress() || 
         address.getAddress().isLoopbackAddress()) {
-      sb.append(InetAddress.getLocalHost().getHostAddress());
+      sb.append(InetAddress.getLocalHost().getCanonicalHostName());
     } else {
       sb.append(address.getHostName());
     }