Daniel Nugent created ARROW-5952:
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Summary: [Python] Segfault when reading empty table with category
as pandas dataframe
Key: ARROW-5952
URL: https://issues.apache.org/jira/browse/ARROW-5952
Project: Apache Arrow
Issue Type: Bug
Components: Python
Affects Versions: 0.14.0
Environment: Linux 3.10.0-327.36.3.el7.x86_64
Python 3.6.8
Pandas 0.24.2
Pyarrow 0.14.0
Reporter: Daniel Nugent
I have two short sample programs which demonstrate the issue:
{code:java}
import pyarrow as pa
import pandas as pd
empty = pd.DataFrame({'foo':[]},dtype='category')
table = pa.Table.from_pandas(empty)
outfile = pa.output_stream('bar')
writer = pa.RecordBatchFileWriter(outfile,table.schema)
writer.write(table)
writer.close()
{code}
{code:java}
import pyarrow as pa
pa.ipc.open_file('bar').read_pandas()
Segmentation fault
{code}
My apologies if this was already reported elsewhere, I searched but could not
find an issue which seemed to refer to the same behavior.
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