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https://issues.apache.org/jira/browse/STORM-885?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14592539#comment-14592539
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Jungtaek Lim commented on STORM-885:
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Is Pacemaker already implemented? Or it is in progress?
I've posted https://issues.apache.org/jira/browse/STORM-872 and thinking about
how to realize.
(Actually my approach was giving a chance to replace ZK for worker heartbeat to
Redis or Couchbase, or other in-memory NoSQL, which can scale well. It could be
heartbeat server / client when we extract interface well.)
But if pacemaker is implemented (or will be implemented in a short time), and
it is pretty easy to install / use for end-users, we can close STORM-872 as
duplicated.
> Heartbeat Server (Pacemaker)
> ----------------------------
>
> Key: STORM-885
> URL: https://issues.apache.org/jira/browse/STORM-885
> Project: Apache Storm
> Issue Type: Improvement
> 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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