The following FLIPs are marked as "Under discussion" in the wiki
<https://cwiki.apache.org/confluence/display/FLINK/Flink+Improvement+Proposals>,
but actually seem to be in progress (i.e. have open pull requests) and
some even have code merged to master:
* FLIP-36 (Interactive Programming)
* FLIP-38 (Python Table API)
* FLIP-44 (Support Local Aggregation)
* FLIP-50 (Spill-able Heap Keyed State Backend)
I would like to find out what the _actual_ state is, and then discuss
how we handle these FLIPs from now on (e.g., retcon history and mark
them as accepted, freeze further development until a vote, ...).
I've cc'd all people who create the wiki pages for said FLIPs.
