[ARROW-1188] Segfault when trying to serialize a DataFrame with Null-only Categorical Column

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 0.5.0
• Component/s: Python
• External issue URL: https://github.com/apache/arrow/issues/16911
• Assignee: Wes McKinney
• Reporter: Panagiotis Mavrogiorgos
• Created: 06/Jul/17 13:28
• Updated: 11/Jan/23 07:13
• Resolved: 18/Jul/17 13:37

Description

import pandas as pd
import feather
print("Pandas: %s" % pd.__version__)
print("Feather: %s" % feather.version.version)
df = pd.DataFrame({"A": (1, 2, 3), "B": ("a", "b", "c")})   # if we use this line everything works fine
df = pd.DataFrame({"A": (1, 2, 3), "B": (None, None, None)})
df = df.assign(B=df.B.astype("category"))
#feather.write_dataframe(df, "/tmp/foo.feather")   # this segfaults!

Pandas: 0.19.2
Feather: 0.4.0