* Vladimir Davydov <vdavydov.dev@xxxxxxxxx> [18/07/27 16:55]:
Currently, both vy_read_iterator_next() and vy_point_lookup() add the
returned tuple to the tuple cache. As a result, we store partial tuples
in a secondary index tuple cache although we could store full tuples
(we have to retrieve them anyway when reading a secondary index). This
means wasting memory. Besides, when the #2129 gets implemented, there
will be tuples in a secondary index that have to be skipped as they have
been overwritten in the primary index. Caching them would be inefficient
and error prone. So let's call vy_cache_add() from the upper level and
add only full tuples to the cache.
