Benedict Hutchings created ARROW-9143:
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Summary: [Python] Segfault in dictionary_encode after
RecordBatch.slice
Key: ARROW-9143
URL: https://issues.apache.org/jira/browse/ARROW-9143
Project: Apache Arrow
Issue Type: Bug
Components: Python
Affects Versions: 0.17.1
Environment: linux, pyarrow 0.17.1 installed with pipenv
Reporter: Benedict Hutchings
A segfault is triggered by calling dictionary_encode on a column after slicing
a Recordbatch:
{code:java}
import pyarrow as pa
print(pa.__version__)
array = pa.array(['foo', 'bar', 'baz'])
batch = pa.RecordBatch.from_arrays([array], names=['a'])
batch.column(0).dictionary_encode() ### works fine
sub_array = batch.slice(1)
sub_array.column(0).dictionary_encode() ### segfault
{code}
Slicing the underlying array and dictionary_encoding works as expected:
{code:java}
array.slice(1).dictionary_encode()
{code}
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