Adrien Grand 33599d9a34 Compressed geo-point field data.
This commit allows to trade precision for memory when storing geo points.
This new field data impl accepts a `precision` parameter that controls the
maximum expected error for storing coordinates. This option can be updated on
a live index with the PUT mapping API.

Default precision is 1cm, which requires 8 bytes per geo-point (50% memory
saving compared to using 2 doubles).

Close #4386
2013-12-17 11:29:48 +01:00
..
2013-12-17 11:29:48 +01:00