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From GitBox <...@apache.org>
Subject [GitHub] [flink] dmvk commented on a change in pull request #17000: [FLINK-23946][clients] Application mode should shutdown gracefully on…
Date Mon, 30 Aug 2021 19:26:40 GMT

dmvk commented on a change in pull request #17000:
URL: https://github.com/apache/flink/pull/17000#discussion_r698747330

File path: flink-clients/src/main/java/org/apache/flink/client/deployment/application/ApplicationMiniCluster.java
@@ -0,0 +1,65 @@
+ * 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.
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+ * limitations under the License.
+ */
+package org.apache.flink.client.deployment.application;
+import org.apache.flink.api.common.JobSubmissionResult;
+import org.apache.flink.client.program.PackagedProgram;
+import org.apache.flink.runtime.dispatcher.SessionDispatcherFactory;
+import org.apache.flink.runtime.dispatcher.runner.DefaultDispatcherRunnerFactory;
+import org.apache.flink.runtime.entrypoint.component.DefaultDispatcherResourceManagerComponentFactory;
+import org.apache.flink.runtime.entrypoint.component.DispatcherResourceManagerComponentFactory;
+import org.apache.flink.runtime.jobgraph.JobGraph;
+import org.apache.flink.runtime.minicluster.MiniCluster;
+import org.apache.flink.runtime.minicluster.MiniClusterConfiguration;
+import org.apache.flink.runtime.resourcemanager.StandaloneResourceManagerFactory;
+import org.apache.flink.runtime.rest.JobRestEndpointFactory;
+import java.util.concurrent.CompletableFuture;
+/** An extension to {@link MiniCluster} that runs packaged program in application mode. */
+public class ApplicationMiniCluster extends MiniCluster {

Review comment:
       Agreed, but this is hard to do without breaking mini cluster public API 🤔
   I did attempt with AbstractMiniCluster and it didn't look right. 😢 Huge change-set that
is breaking public API (eg. enum for HAService would have to move to abstract class, configurations,
...). I think this could be done properly, but it would definitely take some time (~ 2MD?),
there should be an easier way.
   What I can do is to allow passing custom DispatcherResourceManagerComponentFactory into
`TestingMiniCluster` (very similar to what we already do with HighAvailabilityServices). User
would be still able to access methods like `submitJob`, but that would be no different from
real world scenario, where this methods are accessible via RPC.

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