SML0127 commented on PR #3928:
URL: https://github.com/apache/flink-cdc/pull/3928#issuecomment-2753188602

   @ruanhang1993 Thanks for your kind explanation. 
   I understand the situation. As you suggested, I will add warings and some 
examples to the docs.
   
   I have a  minor question, if we set 
`scan.incremental.snapshot.backfill.skip` to `true` and using pk as chunk key 
in the incremental phase, will there be no issue? 
   (I means that, first we use a column not in primary key as chunk key in 
snapshot phase. And then use primary key as chunk key in incremental phase)


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