liujinhui1994 commented on pull request #2666:
URL: https://github.com/apache/hudi/pull/2666#issuecomment-811861142
> @liujinhui1994 : Can you please update the description with an example.
1、old data
id name age
1 liujinhui 26
2 sam 25
3 madeline 30
2、new data
{"id": 1,"name": "abc"}
3、 final result
1 abc 26
2 sam 25
3 madeline 30
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