[GitHub] [flink] reswqa commented on a diff in pull request #20223: [FLINK-28457][runtime] Introduce JobStatusHook

[GitBox <gi...@apache.org>]

reswqa commented on code in PR #20223:
URL: https://github.com/apache/flink/pull/20223#discussion_r916792016


##########
flink-runtime/src/main/java/org/apache/flink/runtime/executiongraph/JobStatusHook.java:
##########
@@ -0,0 +1,41 @@
+/*
+ * 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.flink.runtime.executiongraph;
+
+import org.apache.flink.annotation.Internal;
+import org.apache.flink.api.common.JobID;
+
+import java.io.Serializable;
+
+/** Hooks provided by users on job status changing. */
+@Internal
+public interface JobStatusHook extends Serializable {
+
+    /** When Job become CREATED status. It would only be called one time. */

Review Comment:
   ```suggestion
       /** When Job become {@link JobStatus#CREATED} status. It would only be called one time. */
   ```



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