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https://issues.apache.org/jira/browse/ARROW-8773?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Antoine Pitrou resolved ARROW-8773.
-----------------------------------
Fix Version/s: 2.0.0
Resolution: Fixed
Issue resolved by pull request 8004
[https://github.com/apache/arrow/pull/8004]
> [Python] pyarrow schema.empty_table() does not preserve nullability of fields
> -----------------------------------------------------------------------------
>
> Key: ARROW-8773
> URL: https://issues.apache.org/jira/browse/ARROW-8773
> Project: Apache Arrow
> Issue Type: Bug
> Components: Python
> Affects Versions: 0.17.0
> Environment: linux, pyarrow 0.17.0 installed via pipenv
> Reporter: Al Taylor
> Assignee: Krisztian Szucs
> Priority: Major
> Labels: pull-request-available
> Fix For: 2.0.0
>
> Time Spent: 20m
> Remaining Estimate: 0h
>
> Introduced by PR: [https://github.com/apache/arrow/pull/2589]
>
> When a field in a schema is marked as not-nullable, calling empty_table() on
> the schema returns a table with nullable fields.
>
> reproduction
> {code:java}
> >>> import pyarrow as pa
> >>> s = pa.schema([pa.field('a', pa.int64(), nullable=False), pa.field('b',
> >>> pa.int64())])
> >>> s
> a: int64 not null
> b: int64
> >>> e = s.empty_table()
> >>> e
> pyarrow.Table
> a: int64
> b: int64
> >>> e.schema
> a: int64
> b: int64
> >>> assert s == e.schema
> Traceback (most recent call last):
> File "<input>", line 1, in <module>
> AssertionError
> {code}
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