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

    https://github.com/apache/flink/pull/2389#discussion_r75665082
  
    --- Diff: 
flink-runtime/src/main/java/org/apache/flink/runtime/rpc/resourcemanager/ResourceManager.java
 ---
    @@ -52,18 +61,45 @@
     public class ResourceManager extends RpcEndpoint<ResourceManagerGateway> {
        private final ExecutionContext executionContext;
        private final Map<JobMasterGateway, InstanceID> jobMasterGateways;
    +   private final Map<ResourceID, TaskExecutorGateway> taskExecutorGateways;
    +   private final Map<ResourceID, 
ResourceManagerToTaskExecutorHeartbeatScheduler> heartbeatSchedulers;
    +   private final LeaderElectionService leaderElectionService;
    +   private UUID leaderSessionID;
    +   // TODO private final SlotManager slotManager;
     
    -   public ResourceManager(RpcService rpcService, ExecutorService 
executorService) {
    +   public ResourceManager(RpcService rpcService, ExecutorService 
executorService, LeaderElectionService leaderElectionService) {
    --- End diff --
    
    Stephan recently introduced the `HighAvailabilityServices` which is 
basically a factory for HA related functionality. We should pass this argument 
to the constructor and generate the leader election service from there.


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