tustvold commented on a change in pull request #1448:
URL: https://github.com/apache/arrow-rs/pull/1448#discussion_r831212258
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File path: parquet/src/arrow/arrow_reader.rs
##########
@@ -1210,4 +1210,19 @@ mod tests {
assert_eq!(get_dict(&batches[3]), get_dict(&batches[4]));
assert_eq!(get_dict(&batches[4]), get_dict(&batches[5]));
}
+
+ #[test]
+ fn test_read_null_list() {
+ let testdata = arrow::util::test_util::parquet_test_data();
+ let path = format!("{}/null_list.parquet", testdata);
+ let parquet_file_reader =
+
SerializedFileReader::try_from(File::open(&path).unwrap()).unwrap();
+ let mut arrow_reader =
ParquetFileArrowReader::new(Arc::new(parquet_file_reader));
+ let mut record_batch_reader = arrow_reader
+ .get_record_reader(60)
+ .expect("Failed to read into array!");
+
+ let batch = record_batch_reader.next();
+ assert!(batch.is_none());
Review comment:
I don't think this is correct, locally I ran
```
> duckdb.query(f"select count(*) from 'null_list.parquet'").fetchall()
[(1,)]
```
Which would imply that the data contains a single row, with a single null
value
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