HADOOP-304. Improve error message for UnregisteredDatanodeException to include expected node name.

git-svn-id: https://svn.apache.org/repos/asf/lucene/hadoop/trunk@417273 13f79535-47bb-0310-9956-ffa450edef68

CHANGES.txt

@@ -51,6 +51,10 @@ Trunk (unreleased changes)
     starting MapReduce jobs, making it easier to debug this common
     error.  (omalley via cutting)
 
+13. HADOOP-304.  Improve error message for
+    UnregisterdDatanodeException, adding expected node name.
+   (Konstantin Shvachko via cutting)
+
 
 Release 0.3.2 - 2006-06-09
 

src/java/org/apache/hadoop/dfs/UnregisteredDatanodeException.java

@@ -18,8 +18,8 @@ class UnregisteredDatanodeException extends IOException {
   public UnregisteredDatanodeException( DatanodeID nodeID, 
                                         DatanodeInfo storedNode ) {
     super("Data node " + nodeID.getName() 
-        + "is attempting to report storage ID "
-        + nodeID.getStorageID() + ". Expecting " 
-        + storedNode.getStorageID() + ".");
+        + " is attempting to report storage ID "
+        + nodeID.getStorageID() + ". Node " 
+        + storedNode.getName() + " is expected to serve this storage.");
   }
 }