diff --git a/dev/reformat b/dev/reformat
new file mode 100755
index 000000000..d796b6aff
--- /dev/null
+++ b/dev/reformat
@@ -0,0 +1,20 @@
+#!/bin/bash
+#
+# Licensed to the Apache Software Foundation (ASF) under one or more
+# contributor license agreements.  See the NOTICE file distributed with
+# this work for additional information regarding copyright ownership.
+# The ASF licenses this file to You under the Apache License, Version 2.0
+# (the "License"); you may not use this file except in compliance with
+# the License.  You may obtain a copy of the License at
+#
+#    http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+KYUUBI_HOME="$(cd "`dirname "$0"`/.."; pwd)"
+${KYUUBI_HOME}/build/mvn spotless:apply