Doc values support for geo shapes.

[imotov]

There are several features that we would like to add that require fast retrieval of geo shapes and can greatly benefit from having docvalues support for geo shapes.

This issue has gone through a lot of evolution, so this description is edited to reflect
the latest reality

The work for adding geo_shape support for geo_centroid, geo_bounds, geotile_grid, geohash_grid aggregations was accomplished in x-pack by way of the following PRs:

• geotile_grid/geohash_grid (Add geo_shape support for geotile_grid and geohash_grid #55966)
• geo_centroid (Add geo_shape support for the geo_centroid aggregation #55602)
• geo_bounds (Add geo_bounds aggregation support for geo_shape #55328)

This is achieved by implementing by migrating geo_shape mapper registration
to a module (#53562) and then defining the geo_shape with doc values in the spatial plugin (#55037)

[elasticmachine]

Pinging @elastic/es-analytics-geo

[babadofar]

What is the status on this? I really need this for my maps. Anything I could help you out with? the @elastic/es-analytics-geo repo is not public, I guess.

[polyfractal]

No concrete status update right now. We're still discussing how to go about encoding shapes into doc values (there are several limitations/considerations that we need to work around). When we have some news moving forward -- a plan or something similar -- we'll make an update here :)

the elastic/es-analytics-geo repo is not public, I guess.

The @elastic/es-analytics-geo team is just an alias that we use to ping internal email lists, so that different sub-teams can get notified about new issues in their area. There's no additional repo or anything like that :)

[thomasneirynck]

This would be a prerequisite for enabling layer-fitting in the Kibana Maps-app. This is now only possible for document-layers backed by a geo_point field. cf. elastic/kibana#33509