DanielLeens commented on issue #11016:
URL: https://github.com/apache/seatunnel/issues/11016#issuecomment-4640971697

   I checked the behavior described here, and this does look like a real MySQL 
CDC schema-evolution bug rather than a configuration issue.
   
   The problematic path is the unqualified DDL resolution step. In a 
multi-database job where the same table name exists in more than one source 
database, the resolver should bind `ALTER TABLE products ...` to the database 
carried by the current CDC event. If it instead falls back to the first matched 
table name, schema isolation between `shop_a.products` and `shop_b.products` 
can break exactly in the way you described.
   
   Since you already prepared a candidate fix and regression coverage in PR 
#11015, this issue is in a good state for follow-up review rather than more 
reproduction work. I have labeled it as `bug`, and we can continue the 
implementation discussion on that PR.


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