[ 
https://issues.apache.org/jira/browse/FLINK-4516?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15448821#comment-15448821
 ] 

ASF GitHub Bot commented on FLINK-4516:
---------------------------------------

Github user beyond1920 commented on a diff in the pull request:

    https://github.com/apache/flink/pull/2427#discussion_r76779266
  
    --- 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 --
    
    Hi till, thanks for your good advice. I add a new rpcService implementation 
for test. 


> 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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