You are viewing a plain text version of this content. The canonical link for it is here.
Posted to jira@arrow.apache.org by "Martin Thøgersen (Jira)" <ji...@apache.org> on 2022/01/27 21:19:00 UTC
[jira] [Updated] (ARROW-15484) [Python] kwargs fails for pyarrow.parquet.write_to_dataset()
[ https://issues.apache.org/jira/browse/ARROW-15484?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Martin Thøgersen updated ARROW-15484:
-------------------------------------
Summary: [Python] kwargs fails for pyarrow.parquet.write_to_dataset() (was: kwargs fails for pyarrow.parquet.write_to_dataset())
> [Python] kwargs fails for pyarrow.parquet.write_to_dataset()
> ------------------------------------------------------------
>
> Key: ARROW-15484
> URL: https://issues.apache.org/jira/browse/ARROW-15484
> Project: Apache Arrow
> Issue Type: Bug
> Components: Parquet, Python
> Affects Versions: 6.0.1
> Reporter: Martin Thøgersen
> Priority: Major
>
> When supplying `kwargs` such as `basename_template` or `existing_data_behaviour` to `pyarrow.parquet.write_to_dataset()`, it fails as below.
>
> {code:python}
> import pandas as pd
> import pyarrow as pa
> import pyarrow.parquet as pq
> import pyarrow.dataset as ds
> df = pd.DataFrame({
> 'int': [1, 2],
> 'str': ['a', 'b']
> })
> table = pa.Table.from_pandas(df)
> """
> **kwargs : dict,
> Additional kwargs for write_table function. See docstring for write_table or ParquetWriter for more information.
> """
> pq.write_to_dataset(table, root_path='foo',
> use_legacy_dataset=False,
> # kwargs:
> basename_template="prefix-{i}.parquet",
> existing_data_behaviour="error"
> )
> {code}
> {noformat}
> TypeError Traceback (most recent call last)
> ...test.py in <module>
> 16 Additional kwargs for write_table function. See docstring for write_table or ParquetWriter for more information.
> 17 """
> ---> 18 pq.write_to_dataset(table, root_path='foo',
> 19 use_legacy_dataset=False,
> 20 # kwargs:
> ...lib/python3.8/site-packages/pyarrow/parquet.py in write_to_dataset(table, root_path, partition_cols, partition_filename_cb, filesystem, use_legacy_dataset, **kwargs)
> 2144 # map format arguments
> 2145 parquet_format = ds.ParquetFileFormat()
> -> 2146 write_options = parquet_format.make_write_options(**kwargs)
> 2147
> 2148 # map old filesystems to new one
> ...lib/python3.8/site-packages/pyarrow/_dataset.pyx in pyarrow._dataset.ParquetFileFormat.make_write_options()
> ...lib/python3.8/site-packages/pyarrow/_dataset.pyx in pyarrow._dataset.ParquetFileWriteOptions.update()
> TypeError: unexpected parquet write option: basename_template
> {noformat}
--
This message was sent by Atlassian Jira
(v8.20.1#820001)