tarantool / tarantool / 5739

76%

master: 87%

push

travis-ci

vinyl: avoid unnecessary accesses to secondary indexes on recovery

Even if the statement read from xlog on recovery was dumped by the vinyl
engine before the shutdown and hence would be ignored by vy_tx_write(),
we would still issue vy_get() on it in case the space has secondary
indexes. This makes recovery from xlog way too slow. Let's try to avoid
such unnecessary reads by adding extra check if a statement being
replayed is already on disk directly to VinylSpace::execute*. The new
check compares the statement's LSN with the LSN which is known to be
dumped to disk in all ranges of this index, i.e. min over all runs' max
LSNs.

Closes #1900

25 of 25 new or added lines in 2 files covered. (100.0%)

24635 of 32343 relevant lines covered (76.17%)

747411.79 hits per line