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Posted to issues@arrow.apache.org by "Kamil Skalski (Jira)" <ji...@apache.org> on 2022/09/04 16:59:00 UTC
[jira] [Created] (ARROW-17611) Boolean column data saved with V2 from arrow-rs unreadable by pyarrow
Kamil Skalski created ARROW-17611:
-------------------------------------
Summary: Boolean column data saved with V2 from arrow-rs unreadable by pyarrow
Key: ARROW-17611
URL: https://issues.apache.org/jira/browse/ARROW-17611
Project: Apache Arrow
Issue Type: Bug
Components: Format
Affects Versions: 9.0.0
Environment: Rust:
"arrow" = "21.0.0"
"parquet" = "21.0.0"
Python:
parquet-tools 0.2.11
yarrow 9.0.0
Reporter: Kamil Skalski
Attachments: arrow_boolean.tar.gz, x.parquet
I'm generating Parquet V2 files with boolean column, but when trying to read them with pyarrow ({_}parquet-tool{_}s or {_}parq{_}) I'm getting
{code:java}
OSError: Unknown encoding type. {code}
To reproduce run following Rust program:
{code:java}
use arrow::json;
use std::fs::File;
const DATA: &'static str = r#"
{"x": 1, "y": false}
"#;
fn main() -> anyhow::Result<()> {
let mut json = json::ReaderBuilder::new().infer_schema(Some(2))
.build(std::io::Cursor::new(DATA.as_bytes()))?;
let batch = json.next()?.unwrap();
let out_file = File::create("x.parquet")?;
let props = parquet::file::properties::WriterProperties::builder()
.set_writer_version(
parquet::file::properties::WriterVersion::PARQUET_2_0)
.build();
let mut writer = parquet::arrow::ArrowWriter::try_new(
out_file, batch.schema(), Some(props))?;
writer.write(&batch)?;
writer.close()?;
Ok(())
} {code}
and try to show the output _x.parquet_ file
{code:java}
$ cargo run
$ parquet-tools show x.parquet
Traceback (most recent call last):
File "/home/nazgul/.local/bin/parquet-tools", line 8, in <module>
sys.exit(main())
File "/home/nazgul/.local/lib/python3.10/site-packages/parquet_tools/cli.py", line 26, in main
args.handler(args)
File "/home/nazgul/.local/lib/python3.10/site-packages/parquet_tools/commands/show.py", line 59, in _cli
with get_datafame_from_objs(pfs, args.head) as df:
File "/usr/lib/python3.10/contextlib.py", line 135, in __enter__
return next(self.gen)
File "/home/nazgul/.local/lib/python3.10/site-packages/parquet_tools/commands/utils.py", line 190, in get_datafame_from_objs
df: Optional[pd.DataFrame] = stack.enter_context(pf.get_dataframe())
File "/usr/lib/python3.10/contextlib.py", line 492, in enter_context
result = _cm_type.__enter__(cm)
File "/usr/lib/python3.10/contextlib.py", line 135, in __enter__
return next(self.gen)
File "/home/nazgul/.local/lib/python3.10/site-packages/parquet_tools/commands/utils.py", line 71, in get_dataframe
yield pq.read_table(local_path).to_pandas()
File "/home/nazgul/.local/lib/python3.10/site-packages/pyarrow/parquet/__init__.py", line 2827, in read_table
return dataset.read(columns=columns, use_threads=use_threads,
File "/home/nazgul/.local/lib/python3.10/site-packages/pyarrow/parquet/__init__.py", line 2473, in read
table = self._dataset.to_table(
File "pyarrow/_dataset.pyx", line 331, in pyarrow._dataset.Dataset.to_table
File "pyarrow/_dataset.pyx", line 2577, in pyarrow._dataset.Scanner.to_table
File "pyarrow/error.pxi", line 144, in pyarrow.lib.pyarrow_internal_check_status
File "pyarrow/error.pxi", line 115, in pyarrow.lib.check_status
OSError: Unknown encoding type. {code}
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