HBASE-1079 Dumb NPE in ServerCallable hides the RetriesExhausted exception

git-svn-id: https://svn.apache.org/repos/asf/hadoop/hbase/branches/0.18@728689 13f79535-47bb-0310-9956-ffa450edef68

CHANGES.txt

@@ -11,6 +11,7 @@ Release 0.18.2 - Unreleased
    HBASE-981   hbase.io.index.interval doesn't seem to have an effect;
                interval is 128 rather than the configured 32
    HBASE-1070  Up default index interval in TRUNK and branch
+   HBASE-1079  Dumb NPE in ServerCallable hides the RetriesExhausted exception
 
   IMPROVEMENTS
    HBASE-1046  Narrow getClosestRowBefore by passing column family (backport)

src/java/org/apache/hadoop/hbase/client/ServerCallable.java

@@ -68,6 +68,9 @@ public abstract class ServerCallable<T> implements Callable<T> {
   
   /** @return the region name */
   public byte[] getRegionName() {
+    if (location == null) {
+      return null;
+    }
     return location.getRegionInfo().getRegionName();
   }