ruanwenjun commented on code in PR #15826:
URL: 
https://github.com/apache/dolphinscheduler/pull/15826#discussion_r1567099088


##########
dolphinscheduler-common/src/main/java/org/apache/dolphinscheduler/common/config/IYamlDelegate.java:
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@@ -0,0 +1,104 @@
+/*
+ * 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.
+ */
+
+package org.apache.dolphinscheduler.common.config;
+
+import java.util.Map;
+import java.util.Optional;
+import java.util.Set;
+import java.util.function.Function;
+
+public interface IYamlDelegate {

Review Comment:
   > ```
   > s3:
   >     access-key: aaa
   >     access-card: false
   > ```
   > 
   > for example. if you wants to get access key in s3 part. you should firstly 
get mapping object of s3. in s3 mappig object you can get access-key as string 
instead of directly getting `s3.access-key` like properties.
   
   We should wrap this into `S3_ACCESS_KEY`, then this should same with 
properties, and it can be overridden by env.



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