Hi, is there any planning to add new Geospatial functions? And how i can return ST_Distance in meters? And what types of geometry i can use in GeoIndex - it's only POINT? can i use LINESTRING or GEOMETRYCOLLECTION?

These are UDFs that can be added easily. Regarding Index, it’s only point for now. What kind of index do you need on LINESTRING. Maybe a bit more description on the query/ usecase will help

I think ST_Distance is returned in metres already? https://docs.pinot.apache.org/configuration-reference/functions/stdistance