Alexandre Vaniachine


Alexandre is an Open Source enthusiast experienced in troubleshooting and resolving scalability issues across the full software stack. In industry and academia, he scaled up data processing from terabytes to petabytes, while minimizing data losses below acceptable level. Early in his career Alexandre pioneered deployment of MySQL databases on Virtual Machines. Alexandre is a Senior MySQL DBA at VirtualHealth

Unexpected slow ALTER TABLE in MySQL 5.7

Unexpected slow ALTER TABLE in MySQL 5.7

Usually one would expect that ALTER TABLE with ALGORITHM=COPY will be slower than the default ALGORITHM=INPLACE. In this blog post we describe the case when this is not so....

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