Krisztian Szucs created ARROW-7719:
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Summary: [Python][Dataset] Table equality check occasionally fails
Key: ARROW-7719
URL: https://issues.apache.org/jira/browse/ARROW-7719
Project: Apache Arrow
Issue Type: Improvement
Components: Python
Reporter: Krisztian Szucs
Failing build
https://dev.azure.com/ursa-labs/crossbow/_build/results?buildId=5843&view=logs&j=0da5d1d9-276d-5173-c4c4-9d4d4ed14fdb&t=6c939d89-0d1a-51f2-8b30-091a7a82e98c&l=265
{code}
def _check_dataset_from_path(path, table, **kwargs):
import pathlib
# pathlib object
assert isinstance(path, pathlib.Path)
dataset = ds.dataset(ds.source(path, **kwargs))
assert dataset.schema.equals(table.schema, check_metadata=False)
result = dataset.to_table()
assert result.replace_schema_metadata().equals(table)
# string path
dataset = ds.dataset(ds.source(str(path), **kwargs))
assert dataset.schema.equals(table.schema, check_metadata=False)
result = dataset.to_table()
> assert result.replace_schema_metadata().equals(table)
E AssertionError: assert False
E + where False = <built-in method equals of pyarrow.lib.Table object
at 0x7fecacf0cab0>(pyarrow.Table\na: int64\nb: double)
E + where <built-in method equals of pyarrow.lib.Table object at
0x7fecacf0cab0> = pyarrow.Table\na: int64\nb: double.equals
E + where pyarrow.Table\na: int64\nb: double = <built-in method
replace_schema_metadata of pyarrow.lib.Table object at 0x7fecacf0c990>()
E + where <built-in method replace_schema_metadata of
pyarrow.lib.Table object at 0x7fecacf0c990> = pyarrow.Table\na: int64\nb:
double\nmetadata\n--------\nOrderedDict([(b'ARROW:schema',\n
b'/////7AAAAAQAAAAAAAK...AAQAAAAAAAB'\n
b'AiQAAAAUAAAABAAAAAAAAAAIAAwACAAHAAgAAAAAAAABQAAAAAEAAABhAAAA'\n
b'AAAAAA==')]).replace_schema_metadata
{code}
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