Github user ijokarumawak commented on the issue:
https://github.com/apache/nifi/pull/1984
@JPercivall Thanks for your comment. Yes, I concerned about it may hammer
Zk, too. But now we have [Redis backed state
manager](https://github.com/apache/nifi/tree/master/nifi-nar-bundles/nifi-redis-bundle/nifi-redis-extensions/src/main/java/org/apache/nifi/redis/state)
too. That can perform well compared to Zk. Also I wrote [doc for Cluster
scope](https://github.com/apache/nifi/pull/1984/files#diff-64bdb3d4f3927cdfb538dd95975af65aR189)
to use it only if necessary, it wouldn't be enough, though..
I think 'being able to do something if they know what they're doing' is
better than not providing that option.
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