zhang-arvin commented on PR #9336:
URL: https://github.com/apache/paimon/pull/9336#issuecomment-5390596520

   Thanks for the review @JingsongLi! Fixed: when fullDocument is null, 
getExtractRow now returns null instead of an empty map. The operation layer 
(processRecord) returns null for null records, and handleOperation skips null 
INSERT records while still emitting the DELETE. This prevents writing records 
with null primary keys or all-NULL fields. PTAL.


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