ramitg254 commented on code in PR #5715:
URL: https://github.com/apache/hive/pull/5715#discussion_r2042764287
##########
iceberg/iceberg-handler/src/main/java/org/apache/iceberg/mr/hive/HiveIcebergMetaHook.java:
##########
@@ -927,6 +931,52 @@ private void
handleAddColumns(org.apache.hadoop.hive.metastore.api.Table hmsTabl
updateSchema.commit();
}
+ private void handleDropColumn(org.apache.hadoop.hive.metastore.api.Table
hmsTable) throws MetaException {
+ List<FieldSchema> hmsCols = hmsTable.getSd().getCols();
+ List<FieldSchema> icebergCols =
HiveSchemaUtil.convert(icebergTable.schema());
+
+ HiveSchemaUtil.SchemaDifference schemaDifference =
HiveSchemaUtil.getSchemaDiff(hmsCols, icebergCols, true);
+
+ if (schemaDifference.getMissingFromFirst().size() > 1) {
+ throw new MetaException("Cannot drop more than one column");
Review Comment:
Yeah parser will validate this I added it to be on safer side, I'll change
that
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