etseidl opened a new issue, #34086:
URL: https://github.com/apache/arrow/issues/34086
### Describe the bug, including details regarding any error messages,
version, and platform.
When writing Parquet files with version 2 page headers, the `num_rows` field
is incorrect. This appears to be because in `column_writer.cc
ColumnWriterImpl::BuildDataPageV2()` `num_values` is passed twice to the
constructor for `DataPageV2`. The 4th argument should be `num_rows`.
To reproduce:
```python
import pyarrow.parquet as pq
import pyarrow as pa
table = pa.table({'col0': [[1,2,3]]})
pq.write_table(table, 'bug.parquet', data_page_version="2.0")
```
Examining with parquet-cli:
```sh
% parquet-cli pages bug.parquet
Column: col0.list.item
--------------------------------------------------------------------------------
page type enc count avg size size rows nulls min / max
0-D dict S _ 3 8.00 B 24 B
0-1 data _ R 3 2.67 B 8 B 3 0 "1" / "3"
```
"rows" should be 1.
Rewriting the file with parquet-mr gives:
```sh
% parquet-cli pages bug-mr.parquet
Column: col0.list.element
--------------------------------------------------------------------------------
page type enc count avg size size rows nulls min / max
0-0 data _ D 3 5.00 B 15 B 1 0
```
### Component(s)
C++, Parquet
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