MySQL connector emitts snapshot records as c records while other connectors emits them as r records. When checking the MySQL code it is obvoius that there was a plan in the past to make snapshot type configurable but the config option was never implemented.

To enable seamless migration it is thus propose to introduce a new config option into connector framework that will affect whether the snapshot records will be read or create records. All connectors but MySQL will have the default set to r while MySQL will have it set to c. After one or two release the MySQL's default will be switched to align with other connectors.