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https://issues.apache.org/jira/browse/ARROW-6857?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16951152#comment-16951152
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Antoine Pitrou commented on ARROW-6857:
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Thanks for the report. Indeed it seems like there's a regression here.
> Segfault for dictionary_encode on empty chunked_array (edge case)
> -----------------------------------------------------------------
>
> Key: ARROW-6857
> URL: https://issues.apache.org/jira/browse/ARROW-6857
> Project: Apache Arrow
> Issue Type: Bug
> Components: Python
> Affects Versions: 0.15.0
> Reporter: Artem KOZHEVNIKOV
> Assignee: Antoine Pitrou
> Priority: Major
> Labels: pull-request-available
> Fix For: 0.15.1
>
> Time Spent: 10m
> Remaining Estimate: 0h
>
> a reproducer is here :
> {code:python}
> import pyarrow as pa
> aa = pa.chunked_array([pa.array(['a', 'b', 'c'])])
> aa[:0].dictionary_encode()
> # Segmentation fault: 11
> {code}
> For pyarrow=0.14, I could not reproduce.
> I use a conda version : "pyarrow 0.15.0 py37hdca360a_0 conda-forge"
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