(this post was edited on 13/01/2017 after comments from Shlomi N.) In previous posts, we gave an overview of gh-ost and showed you how to test your schema changes before executing them. One important feature...

  In the previous blog post, we discussed how gh-ost works internally and how it compares to Percona’s pt-online-schema-change. Today we’d like to focus on operations - how can we test a schema change with...

  Database schema change is one of the most common activities that a MySQL DBA has to tackle. No matter if you use MySQL Replication or Galera Cluster, direct DDL’s are troublesome and, sometimes, not...