[jira] [Commented] (FLINK-4355) Implement TaskManager side of registration at ResourceManager

["ASF GitHub Bot (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/FLINK-4355?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15418259#comment-15418259 ] 

ASF GitHub Bot commented on FLINK-4355:
---------------------------------------

Github user wenlong88 commented on a diff in the pull request:

    https://github.com/apache/flink/pull/2353#discussion_r74533628
  
    --- Diff: flink-runtime/src/main/java/org/apache/flink/runtime/rpc/taskexecutor/TaskExecutorToResourceManagerConnection.java ---
    @@ -0,0 +1,80 @@
    +/*
    + * 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
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    +
    +package org.apache.flink.runtime.rpc.taskexecutor;
    +
    +import org.apache.flink.runtime.rpc.resourcemanager.ResourceManagerGateway;
    +
    +import java.util.UUID;
    +
    +import static org.apache.flink.util.Preconditions.checkNotNull;
    +
    +public class TaskExecutorToResourceManagerConnection {
    --- End diff --
    
    I think we can have a HARPCGateway extends HAService which can be reused for other components


> Implement TaskManager side of registration at ResourceManager
> -------------------------------------------------------------
>
>                 Key: FLINK-4355
>                 URL: https://issues.apache.org/jira/browse/FLINK-4355
>             Project: Flink
>          Issue Type: Sub-task
>          Components: Cluster Management
>            Reporter: Zhijiang Wang
>            Assignee: Stephan Ewen
>
> If the {{TaskManager}} is unregistered, it should try and register at the {{ResourceManager}} leader. The registration messages are fenced via the {{RmLeaderID}}.
> The ResourceManager may acknowledge the registration (or respond that the TaskManager is AlreadyRegistered) or refuse the registration.
> Upon registration refusal, the TaskManager may have to kill itself.



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