SQOOP-3420: Invalid ERROR message initiates false alarms

(Denes Bodo via Fero Szabo)
diff --git a/src/java/org/apache/sqoop/orm/CompilationManager.java b/src/java/org/apache/sqoop/orm/CompilationManager.java
index f0f5de7..25c678b 100644
--- a/src/java/org/apache/sqoop/orm/CompilationManager.java
+++ b/src/java/org/apache/sqoop/orm/CompilationManager.java
@@ -252,7 +252,7 @@
          *even if the .java file can not be renamed
          *or can not be moved a "dest" directory for
          *any reason.*/
-        LOG.error("Could not rename " + orig + " to " + dest + ". Error: " + e.getMessage());
+        LOG.warn("Could not rename " + orig + " to " + dest + ". Error: " + e.getMessage());
       }
     }
   }