add logging on kafka reading

weed/command/filer_replication.go

@@ -52,6 +52,7 @@ func runFilerReplicate(cmd *Command, args []string) bool {
 			glog.Errorf("receive %s: %+v", key, err)
 			continue
 		}
+		glog.V(1).Infof("processing file: %s", key)
 		if err = replicator.Replicate(key, m); err != nil {
 			glog.Errorf("replicate %s: %+v", key, err)
 		}