nsivabalan commented on issue #6404:
URL: https://github.com/apache/hudi/issues/6404#issuecomment-1261622480

   sorry, just now started looking into the issue. We have unit tests covering 
csv w/ and w/o header config set. So, this is something to do ww your dataset. 
   From the stacktrace, I see it shows 
   ```
   [field1, field2] cannot be entirely null or empty.
   ```
   
   Do you know if there are rows where you record key field values are null? 
record key is not supposed to be null as per hudi. 
   
   


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