…itessio#11313)

Add a VIndex option to skip verify-after-insert behavior when using INSERT...IGNORE or INSERT...ON DUPLICATE KEY UPDATE.

Co-authored-by: Harshit Gangal <[email protected]>
Co-authored-by: Jacques Grove <[email protected]>

Signed-off-by: Max Englander <[email protected]>

Signed-off-by: Max Englander <[email protected]>

DML to lookup VIndexes unconditionally takes a row lock on rows in the
lookup VIndex backing table. Add an option to optionally elide this lock
for cases where we know via business logic that the row will not be
deleted, nor the lookup column changed.

Signed-off-by: Max Englander <[email protected]>

Signed-off-by: Max Englander <[email protected]>

Signed-off-by: Patrick Carnahan <[email protected]>
Signed-off-by: Arthur Schreiber <[email protected]>

Gracefully shutdown VTGate instances

Currently, obtaining table sizes from mysql involves joining
`information_schema.tables`, which can be very costly on systems with a
large number of tables.

My tests on a system with 13k tables took around 20s without this patch,
and only 4s with it.

Instead of synchronously recalculating table size stats after every DDL,
let them be outdated until the periodic schema reload fixes it.

Signed-off-by: pupu <[email protected]>

Signed-off-by: pupu <[email protected]>

Backport schema reload performance fix