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From "Vinod Kone (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (MESOS-6763) Add heartbeats to both input/output connections in IOSwitchboard
Date Mon, 12 Dec 2016 23:21:59 GMT

    [ https://issues.apache.org/jira/browse/MESOS-6763?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15743488#comment-15743488
] 

Vinod Kone commented on MESOS-6763:
-----------------------------------


Keeping the ticket open for the tests review to land.

commit 441e0767f60a14496de67cf17078e912faf2daeb
Author: Kevin Klues <klueska@gmail.com>
Date:   Mon Dec 12 15:20:04 2016 -0800

    Added a bi-directional heartbeat for IOSwitchboard connections.
    
    Review: https://reviews.apache.org/r/54560/

commit c1f9af5b53f370f9720654b360c373a5cb1ad7fe
Author: Kevin Klues <klueska@gmail.com>
Date:   Mon Dec 12 15:19:59 2016 -0800

    Added a `http_heartbeat_interval` flag to the agent flags.
    
    Review: https://reviews.apache.org/r/54630/


> Add heartbeats to both input/output connections in IOSwitchboard
> ----------------------------------------------------------------
>
>                 Key: MESOS-6763
>                 URL: https://issues.apache.org/jira/browse/MESOS-6763
>             Project: Mesos
>          Issue Type: Improvement
>            Reporter: Kevin Klues
>            Assignee: Kevin Klues
>              Labels: debugging, mesosphere
>
> Some networks will kill idle connections if no data is transfered over them within a
set amount of time. For example, using AWS's Elastic Load Balancer (ELB), the default time
to kill a connection is only 60s! Because of this, we need a way to send application level
heartbeats to keep these connections alive for any long running LAUNCH_NESTED_CONTAINER_SESSION,
ATTACH_CONTAINER_INPUT and ATTACH_CONTAINER_OUTPUT calls. 
> We should serve these heartbeats from the IOSwitchboard server rather than the agent
handlers since the agent essentially acts as a proxy and the heartbeats should originate from
the actual server being communicated with.



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