aajisaka commented on code in PR #10199:
URL: https://github.com/apache/iceberg/pull/10199#discussion_r1599418533


##########
aws/src/main/java/org/apache/iceberg/aws/glue/GlueTableOperations.java:
##########
@@ -316,6 +316,11 @@ void persistGlueTable(
               .skipArchive(awsProperties.glueCatalogSkipArchive())
               .tableInput(
                   TableInput.builder()
+                      // Keep the existing table description
+                      .description(glueTable.description())
+                      // This overwrites the existing table description if 
there's a comment like

Review Comment:
   > You mean applyMutation overwrites right?
   
   Yes.
   
   > // Explicitly keep the existing table description since `applyMutation` 
will clear the table description
   
   This is not right. `applyMutation` won't clear the table description, it 
overwrites the description only if the comment is specified by the user as 
below:
   
   ```
    ALTER TABLE prod.db.sample SET TBLPROPERTIES ('comment' = 'A table 
description.')
   ```
   
   I want to explain why I need to call `.description(glueTable.description())` 
first and call `applyMutation` second. If the order is reversed, user cannot 
update the table description by using the comment.



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