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From Paul Lam <paullin3...@gmail.com>
Subject How to clear keyed states periodically?
Date Wed, 12 Sep 2018 10:06:10 GMT
Hi, 

I’m using MapState to deduplicate some ids and the MapState needs to be truncated periodically.
I tried to use ProcessingTimeCallback to call state.clear(), but in this way I can only clear
the state for one key, and actually I need a key group level cleanup. So I’m wondering is
there any best practice for my case? Thanks a lot!

Best,
Paul Lam
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