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From "ASF GitHub Bot (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (FLINK-3134) Make YarnJobManager's allocate call asynchronous
Date Fri, 11 Dec 2015 15:09:11 GMT

    [ https://issues.apache.org/jira/browse/FLINK-3134?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15052874#comment-15052874
] 

ASF GitHub Bot commented on FLINK-3134:
---------------------------------------

GitHub user mxm opened a pull request:

    https://github.com/apache/flink/pull/1450

    [FLINK-3134][yarn] asynchronous YarnJobManager heartbeats

    - use AMRMClientAsync instead of AMRMClient
    - handle allocation and startup of containers in callbacks
    - remove YarnHeartbeat message
    
    The AMRMClientAsync uses one thread to communicate with the resource
    manager and an additional thread to execute the callbacks.

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

    $ git pull https://github.com/mxm/flink yart-heartbeat-async

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

    https://github.com/apache/flink/pull/1450.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 #1450
    
----
commit 8ec6d492795801ffc7c76f37a3a3200bbf85f81c
Author: Maximilian Michels <mxm@apache.org>
Date:   2015-12-08T13:35:04Z

    [FLINK-3134][yarn] asynchronous YarnJobManager heartbeats
    
    - use AMRMClientAsync instead of AMRMClient
    - handle allocation and startup of containers in callbacks
    - remove YarnHeartbeat message
    
    The AMRMClientAsync uses one thread to communicate with the resource
    manager and an additional thread to execute the callbacks.

----


> Make YarnJobManager's allocate call asynchronous
> ------------------------------------------------
>
>                 Key: FLINK-3134
>                 URL: https://issues.apache.org/jira/browse/FLINK-3134
>             Project: Flink
>          Issue Type: Bug
>          Components: YARN Client
>    Affects Versions: 0.10.0, 1.0.0, 0.10.1
>            Reporter: Maximilian Michels
>            Assignee: Maximilian Michels
>             Fix For: 1.0.0
>
>
> The {{allocate()}} call is used in the {{YarnJobManager}} to send a heartbeat to the
YARN resource manager. This call may block the JobManager actor system for arbitrary time,
e.g. if retry handlers are set up within the call to allocate.
> I propose to use the {{AMRMClientAsync}}'s callback methods to send heartbeats and update
the container information. The API is available for our supported Hadoop versions (2.3.0 and
above).
> https://hadoop.apache.org/docs/stable/api/org/apache/hadoop/yarn/client/api/async/AMRMClientAsync.html



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