[jira] [Commented] (FLINK-7831) Retrieve last received heartbeat from HeartbeatManager

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

    [ https://issues.apache.org/jira/browse/FLINK-7831?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16202217#comment-16202217 ] 

ASF GitHub Bot commented on FLINK-7831:
---------------------------------------

GitHub user tillrohrmann opened a pull request:

    https://github.com/apache/flink/pull/4817

    [FLINK-7831] Make last received heartbeat retrievable

    ## What is the purpose of the change
    
    This commit adds functionality to retrieve the last received heartbeat from
    the HeartbeatManager.
    
    ## Verifying this change
    
    - `HeartbeatManagerTest#testLastHeartbeatFrom` and `HeartbeatManager#testLastHeartbeatFromUnregisteredTarget`
    
    ## Does this pull request potentially affect one of the following parts:
    
      - Dependencies (does it add or upgrade a dependency): (no)
      - The public API, i.e., is any changed class annotated with `@Public(Evolving)`: (no)
      - The serializers: (no)
      - The runtime per-record code paths (performance sensitive): (no)
      - Anything that affects deployment or recovery: JobManager (and its components), Checkpointing, Yarn/Mesos, ZooKeeper: (no)
    
    ## Documentation
    
      - Does this pull request introduce a new feature? (no)
      - If yes, how is the feature documented? (not applicable)
    


You can merge this pull request into a Git repository by running:

    $ git pull https://github.com/tillrohrmann/flink addLastHeartbeat

Alternatively you can review and apply these changes as the patch at:

    https://github.com/apache/flink/pull/4817.patch

To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:

    This closes #4817
    
----
commit 9f86e7393d7825a16faf2cf91cb7ac9e6f511bff
Author: Till <ti...@gmail.com>
Date:   2017-10-12T16:24:02Z

    [FLINK-7831] Make last received heartbeat retrievable
    
    This commit adds functionality to retrieve the last received heartbeat from
    the HeartbeatManager.

----


> Retrieve last received heartbeat from HeartbeatManager
> ------------------------------------------------------
>
>                 Key: FLINK-7831
>                 URL: https://issues.apache.org/jira/browse/FLINK-7831
>             Project: Flink
>          Issue Type: Improvement
>          Components: Distributed Coordination
>    Affects Versions: 1.4.0
>            Reporter: Till Rohrmann
>            Assignee: Till Rohrmann
>            Priority: Minor
>              Labels: flip-6
>
> In order to serve the information needed for the Web UI the {{HeartbeatManager}} should expose when it received the last heartbeat from the individual {{TaskExecutors}}.



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