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https://issues.apache.org/jira/browse/FLINK-4516?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15448367#comment-15448367
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ASF GitHub Bot commented on FLINK-4516:
---------------------------------------
Github user tillrohrmann commented on a diff in the pull request:
https://github.com/apache/flink/pull/2427#discussion_r76745278
--- Diff:
flink-runtime/src/test/java/org/apache/flink/runtime/rpc/resourcemanager/ResourceManagerHATest.java
---
@@ -0,0 +1,86 @@
+/*
+ * 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.rpc.resourcemanager;
+
+import akka.util.Timeout;
+import
org.apache.flink.runtime.highavailability.TestingHighAvailabilityServices;
+import
org.apache.flink.runtime.leaderelection.TestingLeaderElectionService;
+import org.apache.flink.runtime.rpc.RpcService;
+import org.apache.flink.runtime.rpc.TestingRpcService;
+import org.junit.After;
+import org.junit.Assert;
+import org.junit.Before;
+import org.junit.Test;
+import scala.concurrent.Await;
+import scala.concurrent.Future;
+
+import java.util.UUID;
+import java.util.concurrent.Callable;
+import java.util.concurrent.TimeUnit;
+
+/**
+ * resourceManager HA test, including grant leadership and revoke
leadership
+ */
+public class ResourceManagerHATest {
+
+ private RpcService rpcService;
+
+ @Before
+ public void setup() throws Exception {
+ rpcService = new TestingRpcService();
+ }
+
+ @After
+ public void teardown() throws Exception {
+ rpcService.stopService();
+ }
+
+ @Test
+ public void testGrantAndRevokeLeadership() throws Exception {
--- End diff --
No, if you use an execution context like the `DirectExecutorService` or
something similar to `CallingThreadDispatcher`, then everything will be
executed by the calling thread, which in your case is the test thread. If that
is the case, then you have a serial execution.
> ResourceManager leadership election
> -----------------------------------
>
> Key: FLINK-4516
> URL: https://issues.apache.org/jira/browse/FLINK-4516
> Project: Flink
> Issue Type: Sub-task
> Components: Cluster Management
> Reporter: zhangjing
> Assignee: zhangjing
>
> 1. When a resourceManager is started, it starts the leadership election
> service first and take part in contending for leadership
> 2. Every resourceManager contains a ResourceManagerLeaderContender, when it
> is granted leadership, it will start SlotManager and other main components.
> when it is revoked leadership, it will stop all its components and clear
> everything.
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