aihai commented on pull request #7210:
URL: https://github.com/apache/incubator-doris/pull/7210#issuecomment-981234224


   Thank you for reply.
   
   2. Sink:  Yes, only support one import format for Rowdata. 
   ``DorisDynamicOutputFormat.addBatch`` and ``DorisDynamicOutputFormat.flush`` 
may be simpler.
   3. Batch delete: `merge_type: DELETE` is a good method for delete. If there 
are two records in a batch : one is delete and the other is append, 
`merge_type: MERGE` can solve ,  maybe is there a better method?


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