[PATCH 09/25] vinyl: store full tuples in secondary index cache

Konstantin Osipov kostja at tarantool.org
Tue Jul 31 23:47:37 MSK 2018

* Vladimir Davydov <vdavydov.dev at gmail.com> [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.

OK to push.

Konstantin Osipov, Moscow, Russia, +7 903 626 22 32
http://tarantool.io - www.twitter.com/kostja_osipov

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