deniskuzZ commented on code in PR #5715:
URL: https://github.com/apache/hive/pull/5715#discussion_r2055946240


##########
iceberg/iceberg-handler/src/main/java/org/apache/iceberg/mr/hive/HiveIcebergMetaHook.java:
##########
@@ -503,6 +503,9 @@ private void 
doPreAlterTable(org.apache.hadoop.hive.metastore.api.Table hmsTable
     } else if (AlterTableType.REPLACE_COLUMNS.equals(currentAlterTableOp)) {
       assertNotMigratedTable(hmsTable.getParameters(), 
currentAlterTableOp.getName().toUpperCase());
       handleReplaceColumns(hmsTable);
+    } else if (AlterTableType.DROP_COLUMN.equals(currentAlterTableOp)) {
+      assertNotMigratedTable(hmsTable.getParameters(), 
currentAlterTableOp.getName().toUpperCase());

Review Comment:
   why isn't it allowed to drop a column from a table migrated to iceberg?



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