Wechar created HUDI-6926:
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             Summary: Disable DROP_PARTITION_COLUMNS when upsert MOR table
                 Key: HUDI-6926
                 URL: https://issues.apache.org/jira/browse/HUDI-6926
             Project: Apache Hudi
          Issue Type: Bug
            Reporter: Wechar


When merge the log files for MOR table, it can not generate partition values if 
we drop partition columns while upsert data. As a result, the updated rows in 
log files will got null for partition columns.

To prevent this issue, we suggest disable DROP_PARTITION_COLUMNS while upsert 
MOR table.



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