Percona Live 2017 Open Source Database Conference

April 24 - 27, 2017

Santa Clara, California

Sergei Petrunia

Sergei Petrunia's picture

Sergei Petrunia

Query Optimizer Developer, MariaDB Corporation


Sergei Petrunia is a query optimizer developer at MariaDB Corporation Ab. He implemented MariaDB's optimizer features like Table Elimination (MariaDB 5.1), improvements to semi-join subquery optimizations (MariaDB 5.3/5.5), SHOW EXPLAIN (MariaDB 10.0), and ANALYZE for statements (MariaDB 10.1) Prior to Monty Program, he has worked for MySQL Ab/Sun Microsystems, where he was the author of query optimizer features like Partition Pruning, Index Merge (MySQL 5.1), and numerous smaller improvements in query optimizer and other parts of the server. He maintains a highly technical blog at


27 April - 11:00 AM - 11:50 AM at Ballroom E
MyRocks is a new storage engine based on RocksDB. It is included in MariaDB Server, and together the combination is called MariaRocks. This talk will describe what one gets when MyRocks’ storage efficiency is combined with MariaDB’s features: - Optimistic parallel replication with MyRocks - Virtual and Dynamic Columns with MyRocks - MyRocks’ Read-Free Replication with MariaDB We will also... [read more]
26 April - 3:30 PM - 4:20 PM at Ballroom E
MariaDB Server has had histograms since MariaDB 10.0, now, MySQL 8.0 will have them too.