Juhyun Seo created HIVE-28116:
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             Summary: I'm curious about the 
"hive.metastore.disallow.incompatible.col.type.changes" settings.
                 Key: HIVE-28116
                 URL: https://issues.apache.org/jira/browse/HIVE-28116
             Project: Hive
          Issue Type: Task
            Reporter: Juhyun Seo


Hello.
I'm leaving an inquiry because I want to understand the 
"hive.metastore.disallow.incompatible.col.type.changes" setting in detail.
When I read the 
[document|https://cwiki.apache.org/confluence/display/Hive/Configuration+Properties#ConfigurationProperties-hive.metastore.disallow.incompatible.col.type.changes]
 it was found to be related to the possibility of converting the data type of 
the column and compatibility. However, if you use `ALTER TABLE 
iceberg.iceberg_db.iceberg_table DROP COLUMN 'name'`, the same error occurs. If 
you delete a column here, the data related to that column will be removed from 
the table, which I think is separate from the compatibility issue of data type, 
and I wonder what it has to do with this setting.
can I check the code related to this?



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