The nn_indexer uuid map maps a set of uuids to a prebuilt nearest neighbor indexer.
In previous versions of the code the mapping was stored on disk, but reading and writing on every query became expensive so an in-memory solution was adopted.
However, the in memory solution nevery syncs itself to disk, so if IBEIS closes the cache is effectively lost even though the neighbor indexes are sitting there on disk. So, this isn't a problem if you never close IBEIS.
There should be a simple mechanism to sync this to disk and load it. I'm currently not sure when these save and load points should be.
Erotemic
commented
7 years ago
The nn_indexer uuid map maps a set of uuids to a prebuilt nearest neighbor indexer.
In previous versions of the code the mapping was stored on disk, but reading and writing on every query became expensive so an in-memory solution was adopted.
However, the in memory solution nevery syncs itself to disk, so if IBEIS closes the cache is effectively lost even though the neighbor indexes are sitting there on disk. So, this isn't a problem if you never close IBEIS.
There should be a simple mechanism to sync this to disk and load it. I'm currently not sure when these save and load points should be.