bkietz commented on a change in pull request #7704:
URL: https://github.com/apache/arrow/pull/7704#discussion_r453337740
##########
File path: cpp/src/parquet/arrow/arrow_schema_test.cc
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@@ -644,6 +649,78 @@ TEST_F(TestConvertParquetSchema,
ParquetRepeatedNestedSchema) {
ASSERT_NO_FATAL_FAILURE(CheckFlatSchema(arrow_schema));
}
+TEST_F(TestConvertParquetSchema, ColumnSubselection) {
+ std::vector<NodePtr> parquet_fields;
+ std::vector<std::shared_ptr<Field>> arrow_fields;
+ {
+ // optional int32 leaf1;
+ // repeated group outerGroup {
+ // optional int32 leaf2;
+ // repeated group innerGroup {
+ // optional int32 leaf3;
+ // }
+ // }
+ parquet_fields.push_back(
Review comment:
On consideration, I think I'll scrap the new overload of
`FromParquetSchema`. It's straightforward to retrieve the specific fields by
index from a "whole" arrow schema and doesn't currently warrant a dedicated
utility.
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