Panagiotis Mavrogiorgos created ARROW-1188:
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Summary: Segfault when trying to serialize a DataFrame with
Null-only Categorical Column
Key: ARROW-1188
URL: https://issues.apache.org/jira/browse/ARROW-1188
Project: Apache Arrow
Issue Type: Bug
Reporter: Panagiotis Mavrogiorgos
{code}
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!
{code}
{code}
Pandas: 0.19.2
Feather: 0.4.0
{code}
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