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https://issues.apache.org/jira/browse/STORM-885?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14964303#comment-14964303
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Jungtaek Lim commented on STORM-885:
------------------------------------

[~knusbaum] I just would like to see its progress, as I'm a fan of heartbeat 
server.
In addition I'd like to ask a question: does it support H/A itself? It should 
be, cause it could be a new SPOF.

> Heartbeat Server (Pacemaker)
> ----------------------------
>
>                 Key: STORM-885
>                 URL: https://issues.apache.org/jira/browse/STORM-885
>             Project: Apache Storm
>          Issue Type: Improvement
>          Components: storm-core
>            Reporter: Robert Joseph Evans
>            Assignee: Kyle Nusbaum
>
> Large highly connected topologies and large clusters write a lot of data into 
> ZooKeeper.  The heartbeats, that make up the majority of this data, do not 
> need to be persisted to disk.  Pacemaker is intended to be a secure 
> replacement for storing the heartbeats without changing anything within the 
> heartbeats.  In the future as more metrics are added in, we may want to look 
> into switching it over to look more like Heron, where a metrics server is 
> running for each node/topology.  And can be used to aggregate/per-aggregate 
> them in a more scalable manor.



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