Avoiding Data Loss With Older Versions of Pt-table-sync This is an off-site link.  Please review our Terms of Service for additional information.

(Ike Walker) The pt-table-sync tool uses the MySQL REPLACE command to rewrite row data on a master database in order to assure consistency between the master and its replicas. The REPLACE command makes a lot of sense for that tool, but it also has the potential to cause problems.

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