Differences between Percona MyRocks and Facebook MyRocks¶
The original MyRocks was developed by Facebook and works with their implementation of MySQL. Percona MyRocks is a branch of MyRocks for Percona Server for MySQL and includes the following differences from the original implementation:
The behavior of the
START TRANSACTION WITH CONSISTENT SNAPSHOTstatement depends on the transaction isolation level.
Storage Engine Transaction isolation level
InnoDB Success Success Facebook MyRocks Fail Success (MyRocks engine only; read-only, as all MyRocks engine snapshots) Percona MyRocks Fail with any DML which would violate the read-only snapshot constraint Success (read-only snapshots independent of the engines in use)
Percona MyRocks includes the
zstdstatically linked libraries.