OptionalExcludeOptionalLastOptionalMaxOptionalOverwriteThe run overwrites human values: no record is skipped (an unchanged record still holds the values to overwrite).
OptionalProcessorOptionalProcessThe run's provider: the watermark reads run on it (never the global provider).
OptionalSkipWhether unchanged records are skipped; off, a Checksum run still carries the processor's basis hashes.
Parameters for checking watermarks across a batch of records.