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Multi-Threaded Slave Statistics

 | July 19, 2017 |  Posted In: Insight for DBAs, MySQL, Replication

Multi-Threaded Slave Statistics

In this blog post, I’ll talk about multi-threaded slave statistics printed in MySQL error log file. MySQL version 5.6 and later allows you to execute replicated events using parallel threads. This feature is called Multi-Threaded Slave (MTS), and to enable it you need to modify the slave_parallel_workers variable to a value greater than 1. Recently, a […]

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MySQL super_read_only Bugs

and  | February 8, 2017 |  Posted In: Insight for DBAs, MySQL, Replication

MySQL error code 1215

This blog we describe an issue with MySQL 5.7’s super_read_only feature when used alongside with GTID in chained slave instances. Background In MySQL 5.7.5 and onward introduced the gtid_executed table in the MySQL database to store every GTID. This allows slave instances to use the GTID feature regardless whether the binlog option is set or not. Here […]

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