[jira] [Created] (HUDI-8421) Update docs on implementing getMandatoryFieldsForMerging for custom record merge implementation

[Y Ethan Guo (Jira)]

Y Ethan Guo created HUDI-8421:
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             Summary: Update docs on implementing getMandatoryFieldsForMerging 
for custom record merge implementation
                 Key: HUDI-8421
                 URL: https://issues.apache.org/jira/browse/HUDI-8421
             Project: Apache Hudi
          Issue Type: Improvement
            Reporter: Y Ethan Guo






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