Concerning The Length Of Index Keys #2238
Description
In looking at the issue of how to make use of the GeoWave indexing code in GeoTrellis (see here and here), the issue of GeoTrellis' spatial and spatio-temporal index key length (currently fixed at one 64-bit Long) comes up.
GeoMesa (in its XZ-index) and GeoWave both use Array[Byte] for this purpose.
Preliminary, I found that upgrading GeoTrellis to use an Array[Byte] would require significant and wide-ranging changes and/or duplications throughout many parts of the code; this issue is intended to be a reminder and a place for gathering thoughts about this question.
Also, it may make sense to use BigInt rather than Array[Byte] because it has the ability to go to/from big-endian arrays of bytes and it matches well with GeoTrellis' desire to compare keys.