HDFS-3012. Exception while renewing delegation token. Contributed by Bobby Evans.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1295232 13f79535-47bb-0310-9956-ffa450edef68

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

@@ -117,6 +117,9 @@ Trunk (unreleased changes)
     HDFS-2908. Add apache license header for StorageReport.java. (Brandon Li
     via jitendra)
 
+    HDFS-3012. Exception while renewing delegation token. (Bobby Evans via
+    jitendra)
+
 Release 0.23.3 - UNRELEASED 
 
   INCOMPATIBLE CHANGES

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/DFSClient.java

@@ -610,6 +610,12 @@ public class DFSClient implements java.io.Closeable {
   @InterfaceAudience.Private
   public static class Renewer extends TokenRenewer {
     
+    static {
+      //Ensure that HDFS Configuration files are loaded before trying to use
+      // the renewer.
+      HdfsConfiguration.init();
+    }
+    
     @Override
     public boolean handleKind(Text kind) {
       return DelegationTokenIdentifier.HDFS_DELEGATION_KIND.equals(kind);