Index: IndexMerger.java
===================================================================
--- IndexMerger.java	(revision 738880)
+++ IndexMerger.java	(working copy)
@@ -341,7 +341,7 @@
                     }
                 }
             } catch (Throwable e) {
-                log.error("Error while merging indexes: " + e);
+                log.error("Error while merging indexes: ", e);
             }
         }
         log.info("IndexMerger terminated");