MAPREDUCE-6442. Stack trace is missing when error occurs in client protocol provider's constructor Contributed by Chang Li.

(cherry picked from commit 9b685773ec1031e90cc2b8aedb42670721757e22)

hadoop-mapreduce-project/CHANGES.txt

@@ -315,6 +315,9 @@ Release 2.7.2 - UNRELEASED
     MAPREDUCE-6439. AM may fail instead of retrying if RM shuts down during the
     allocate call. (Anubhav Dhoot via kasha)
 
+    MAPREDUCE-6442. Stack trace is missing when error occurs in client protocol
+    provider's constructor (Chang Li via ozawa)
+
 Release 2.7.1 - 2015-07-06 
 
   INCOMPATIBLE CHANGES

hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/Cluster.java

@@ -111,7 +111,7 @@ public class Cluster {
         } 
         catch (Exception e) {
           LOG.info("Failed to use " + provider.getClass().getName()
-              + " due to error: " + e.getMessage());
+              + " due to error: ", e);
         }
       }
     }