[jira] [Created] (ARROW-17633) [Python][CI] test_write_dataset_max_rows_per_file is flaky

["Antoine Pitrou (Jira)" <ji...@apache.org>]

Antoine Pitrou created ARROW-17633:
--------------------------------------

             Summary: [Python][CI] test_write_dataset_max_rows_per_file is flaky
                 Key: ARROW-17633
                 URL: https://issues.apache.org/jira/browse/ARROW-17633
             Project: Apache Arrow
          Issue Type: Bug
          Components: Continuous Integration, Python
            Reporter: Antoine Pitrou


I am starting to see intermittent but frequent CI failures in {{test_write_dataset_max_rows_per_file}}.
Is {{write_dataset}} supposed to create the base directory?

{code}
=================================== FAILURES ===================================
_____________________ test_write_dataset_max_rows_per_file _____________________

tempdir = PosixPath('/tmp/pytest-of-root/pytest-0/test_write_dataset_max_rows_pe0')

    @pytest.mark.parquet
    def test_write_dataset_max_rows_per_file(tempdir):
        directory = tempdir / 'ds'
        max_rows_per_file = 10
        max_rows_per_group = 10
        num_of_columns = 2
        num_of_records = 35
    
        record_batch = _generate_data_and_columns(num_of_columns,
                                                  num_of_records)
    
>       ds.write_dataset(record_batch, directory, format="parquet",
                         max_rows_per_file=max_rows_per_file,
                         max_rows_per_group=max_rows_per_group)

usr/local/lib/python3.9/site-packages/pyarrow/tests/test_dataset.py:3919: 
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 
usr/local/lib/python3.9/site-packages/pyarrow/dataset.py:988: in write_dataset
    _filesystemdataset_write(
pyarrow/_dataset.pyx:2811: in pyarrow._dataset._filesystemdataset_write
    ???
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 

>   ???
E   FileNotFoundError: [Errno 2] Failed to open local file '/tmp/pytest-of-root/pytest-0/test_write_dataset_max_rows_pe0/ds/part-1.parquet'. Detail: [errno 2] No such file or directory
{code}




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