coastalwhite opened a new issue, #43584:
URL: https://github.com/apache/arrow/issues/43584
### Describe the bug, including details regarding any error messages,
version, and platform.
When writing away large files with fixed size binary, it will write an
invalid Parquet dictionary.
```python
import pyarrow as pa
import pyarrow.parquet as pq
import pyarrow.csv as pacsv
import random
import uuid
import io
f = io.BytesIO()
for i in range(0, 100000):
N = random.randint(1, 12)
arr = pa.array([str(uuid.uuid4())[:N] for _ in range(1_000_000)],
type=pa.binary(N))
table = pa.table({ 'a': arr })
f.seek(0)
pq.write_table(table, f)
f.seek(0)
roundtrip_pa = pq.read_table(f)
assert table == roundtrip_pa
```
The error is the following:
```
Traceback (most recent call last):
File "/home/johndoe/Projects/polars/fsl.py", line 20, in <module>
roundtrip_pa = pq.read_table(f)
^^^^^^^^^^^^^^^^
File
"/nix/store/lpyxz6g2gjddddivs60aqm97rmbiakha-python3-3.11.9-env/lib/python3.11/site-packages/pyarrow/parquet/core.py",
line 1811, in read_table
return dataset.read(columns=columns, use_threads=use_threads,
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File
"/nix/store/lpyxz6g2gjddddivs60aqm97rmbiakha-python3-3.11.9-env/lib/python3.11/site-packages/pyarrow/parquet/core.py",
line 1454, in read
table = self._dataset.to_table(
^^^^^^^^^^^^^^^^^^^^^^^
File "pyarrow/_dataset.pyx", line 562, in pyarrow._dataset.Dataset.to_table
File "pyarrow/_dataset.pyx", line 3804, in
pyarrow._dataset.Scanner.to_table
File "pyarrow/error.pxi", line 154, in
pyarrow.lib.pyarrow_internal_check_status
File "pyarrow/error.pxi", line 91, in pyarrow.lib.check_status
OSError: Unexpected end of stream
/build/apache-arrow-16.0.0/cpp/src/parquet/arrow/reader.cc:109
LoadBatch(batch_size)
/build/apache-arrow-16.0.0/cpp/src/parquet/arrow/reader.cc:1252
ReadColumn(static_cast<int>(i), row_groups, reader.get(), &column)
```
From debugging with the Polars parquet reader, it seems to generate a wrong
Parquet dictionary index.
### Component(s)
Parquet, Python
--
This is an automated message from the Apache Git Service.
To respond to the message, please log on to GitHub and use the
URL above to go to the specific comment.
To unsubscribe, e-mail: issues-unsubscr...@arrow.apache.org.apache.org
For queries about this service, please contact Infrastructure at:
us...@infra.apache.org
