Operating System: All
Platform: All

Redesign statistics manager, proposal from Anil:

(1) No statistics – Statistics are totally disabled (Plugin won't send any statistics request and there won't be any operational flow in the data store). This should be by default off.
(2) Verifier Mode : Statistics will be collected only once, when flow is getting installed. This should be collected for flow installed through data store and through rpc both.
(3) Periodic Stats Collection : Periodic statistics collection with specific interval. And this should have following config knobs
3.1 : Collection-Interval : Time after which it should fetch the stats
3.2 : Enable specific Stats : Enable specific stats that user want to capture (E.g meter stats ). By default it should be on for all stats.

(4) Verifier + Periodic Stats Collection : Flow/Group/Meter/Table stats will be collected once for sure, but periodic stats will be collected only for the user specified stats.

(5) Cookie based comparison for statistics rather than whole flow comparison. This will improve the performance significantly.

evanz can you please link the Jira item that did the improvement (selecting which stats request to send) to this Jira item.

(1) &  (3) is already done. (2) , (4) and (5) are still pending. Remaining features will be implemented in Neon release.