Merge dev3-138.dev.cn.tlan:/home/zhl/mysql/mysql-5.0/bug19787

into  dev3-138.dev.cn.tlan:/home/zhl/mysql/mysql-5.1/bug19787

storage/ndb/src/kernel/blocks/dbdih/DbdihMain.cpp

@@ -6699,7 +6699,13 @@ void Dbdih::execCREATE_FRAGMENTATION_REQ(Signal * signal)
         }
       }
     }
-    ndbrequire(count == (2U + (1 + noOfReplicas) * noOfFragments)); 
+    if(count != (2U + (1 + noOfReplicas) * noOfFragments)){
+        char buf[255];
+        BaseString::snprintf(buf, sizeof(buf),
+                           "Illegal configuration change: NoOfReplicas."
+                           " Can't be applied online ");
+        progError(__LINE__, NDBD_EXIT_INVALID_CONFIG, buf);
+    }
     
     CreateFragmentationConf * const conf = 
       (CreateFragmentationConf*)signal->getDataPtrSend();