wgtmac commented on code in PR #45152:
URL: https://github.com/apache/arrow/pull/45152#discussion_r1901476242
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cpp/src/parquet/arrow/arrow_schema_test.cc:
##########
@@ -832,6 +832,27 @@ TEST_F(TestConvertParquetSchema,
IllegalParquetNestedSchema) {
Invalid, testing::HasSubstr("LIST-annotated groups must not be
repeated."),
ConvertSchema(parquet_fields));
}
+ // List<List<String>>: outer list is two-level encoding, inner list is empty.
Review Comment:
```suggestion
// List<List<>>: outer list is two-level encoding, inner list is empty.
```
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