{"columns":[{"name":"a","type":"list<array: list<array: int32 not null> not null>"}],"n_rows":1,"rows_kept":1,"cut":false,"text_format":"parquet-jsonl-2026-10-02","bounds":{"document_bytes":16777216,"package_text_limit_bytes":33554432,"package_text_slack_bytes":1024,"rows_first":2000,"rows_last":500,"rows_between":2000,"halvings":0,"cell_chars":16384,"cell_head_chars":4096,"vector_min":64,"vector_head_fixed":16,"vector_head_variable":64,"kv_value_chars":1048576,"nesting_max":64,"binary_text":true},"cells_cut":0,"cells_bad_utf8":0,"cells_raw":0,"cells_binary":0,"cells_binary_text":0,"cells_vector":0,"n_row_groups":1,"reader":"pyarrow 23.0.1, python 3.13","created_by":"parquet-mr version 1.14.3 (build b5e376a2caee767a11e75b783512b14cf8ca90ec)","schema":{"fields":[{"name":"a","type":"list<array: list<array: int32 not null> not null>","nullable":false,"metadata":null,"children":[{"name":"array","type":"list<array: int32 not null>","nullable":false,"metadata":null,"children":[{"name":"array","type":"int32","nullable":false,"metadata":null,"children":null}]}]}],"parquet":"required group field_id=-1 my_record {\n  required group field_id=-1 a (List) {\n    repeated group field_id=-1 array (List) {\n      repeated int32 field_id=-1 array;\n    }\n  }\n}\n"},"kv_metadata":[["writer.model.name","avro"],["parquet.avro.schema","{\"type\":\"record\",\"name\":\"my_record\",\"fields\":[{\"name\":\"a\",\"type\":{\"type\":\"array\",\"items\":{\"type\":\"array\",\"items\":\"int\"}}}]}"]]}
[[[1,2],[3,4]]]