We have encountered an increased error rate in MySQL Extractor after a new version release on Friday, Sept 14, 16:00 UTC.
These errors happened only when the job had a connection issue and had to reconnect to the MySQL server.
The previous version is now rolled back and we're working on a fix.
We're sorry for this inconvenience.
Update Sunday, Sept 16, 2018, 08:15 UTC
The MySQL Extractor has been updated to resolve this issue.