Jim Ferenczi 88993e763f Fix handling of null values in geo_point (#65307)
A bug was introduced in 7.10 that causes explicit `null` values to be indexed in the _field_names
field. This change fixes this bug for newly ingested data but `null` values ingested with 7.10 will
continue to match `exists` query so a reindex is required.

Fixes #65306
2020-11-24 11:00:37 +01:00
..