Whether the Source Database Is the Standby Database of a GaussDB(for MySQL) Instance
If the source database is a standby GaussDB(for MySQL) database and there is no binlogs, the incremental migration will fail.
Failure Cause
The source database is a standby database and does not contain binlogs.
Handling Suggestion
Use a primary GaussDB(for MySQL) database as the source database, and perform the pre-check again.
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