Hello,yes, i think you'll need to use a ProcessFunction and clean up the state manually.
On 11.03.2018 15:13, sundy wrote:
hi: my streaming application always do Key by the some keys with event timestamp, such as keyBy( “qps_1520777430”), so the expired keys(1 hours ago) are useless. And I use rocksdb to store the state, I want to know What's the best way to clean up the expired rocksdb state, should I must implement a ProcessFunction and set a time ticker to do that?
