Github user revans2 commented on the issue:
https://github.com/apache/storm/pull/2433
@HeartSaVioR
I didn't really want to make pacemaker the default because not everyone
needs it, standing up yet another server is a pain for customers, and I was
hoping it would be temporary. Once we have the metrics out of the heartbeat,
which yes I hope to do in conditionally in 2.x and completely remove in 3.x, we
can leave simple heartbeats in ZK, or move to push the heartbeats directly to
nimbus, whichever is fine with me. Then there would be no need for pacemaker
and it could be deprecated.
Hopefully I answered most of your other questions in my response to
@danny0405
[above](https://github.com/apache/storm/pull/2433#issuecomment-356965437)
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