Hi, It looks impossible to implement a keyed state with operator state now.
I know it sounds like "just use a keyed state", but latter requires updating it on every value change as opposed to operator state and thus can be expensive (especially if you have to deal with mutable structures inside which have to be serialized). The problem is that there is no way to tell Flink how to reassign savepoint parts between partitions, and thus impossible to route data to correct partitions. Is there anything I missed or maybe a plan to implement it in future? Best regards, Dmitry
