Github user revans2 commented on the issue:
https://github.com/apache/storm/pull/414
@danny0405 That is very similar to what we want to move towards in our
rolling upgrades. We have done a very good job of maintaining compatibility of
LS and ZK once we moved to thrift for all of them. There were a few hiccups at
the beginning, but none of those were officially released. Because of feature
work we do/etc we typically don't run "official" releases of apache storm, but
code that is based off of an official release + a bunch of other stuff. This
is what bit us once as we were working on adding in support for rolling
upgrades and had to start clearing the local state on the node. This should
not be a problem, especially if you stick with official releases.
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