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From Jian He <...@hortonworks.com>
Subject Re: Heartbeat info in AM and NM in Yarn
Date Fri, 13 Jun 2014 17:53:14 GMT
NM heartbeats with RM to update container status while AM is periodically
heartbeats with RM to tell RM that AM itself is still alive. AM also use
the same heartbeat call to negotiate resources from RM


On Fri, Jun 13, 2014 at 10:39 AM, Mohit Anchlia <mohitanchlia@gmail.com>

> It appears that NM and AM both sends the heartbeat to the resource
> manager. It also appears that they send the health information of the
> containers running on the node. I am trying to understand what's the core
> difference between the two?

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