Making executor pool with only 1 thread. More than one creates problems
with file assmebly: Complete callback may get called before all segment
callbacks finish working
diff --git a/src/object-db.cc b/src/object-db.cc
index 84c6ae8..d153228 100644
--- a/src/object-db.cc
+++ b/src/object-db.cc
@@ -67,7 +67,7 @@
   res = sqlite3_exec (m_db, INIT_DATABASE.c_str (), NULL, NULL, &errmsg);
   if (res != SQLITE_OK && errmsg != 0)
     {
-      _LOG_DEBUG (errmsg);
+      _LOG_DEBUG ("Init error: " << errmsg);
       sqlite3_free (errmsg);
     }