Piotr Bajger created ARROW-6038:
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Summary: [Python] pyarrow.Table.from_batches produces corrupted
table if any of the batches were empty
Key: ARROW-6038
URL: https://issues.apache.org/jira/browse/ARROW-6038
Project: Apache Arrow
Issue Type: Bug
Affects Versions: 0.13.0
Reporter: Piotr Bajger
Attachments: segfault_ex.py
When creating a Table from an list/iterator of batches which contains an
"empty" RecordBatch a Table is produced but attempts to run any pyarrow
built-in functions (such as unique()) occasionally result in a Segfault.
The MWE is attached: [^segfault_ex.py]
# The segfaults happen randomly, around 30% of the time.
# Commenting out line 10 in the MWE results in no segfaults.
# The segfault is triggered using the unique() function, but I doubt the
behaviour is specific to that function, from what I gather the problem lies in
Table creation.
I'm on Windows 10, using Python 3.6 and pyarrow 0.13.0 (py36h8c67754_1) from
conda-forge.
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