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Title: Fix Python UDAF list-of-timestamps return by enforcing list-valued scalars and caching PyArrow types by kosiew · Pull Request #1347 · apache/datafusion-python · GitHub

Open Graph Title: Fix Python UDAF list-of-timestamps return by enforcing list-valued scalars and caching PyArrow types by kosiew · Pull Request #1347 · apache/datafusion-python

X Title: Fix Python UDAF list-of-timestamps return by enforcing list-valued scalars and caching PyArrow types by kosiew · Pull Request #1347 · apache/datafusion-python

Description: Which issue does this PR close? Closes Cannot do udaf that returns list of timestamps #1339. Rationale for this change Python UDAFs that logically return a list (e.g., “collect all timestamps for...

Open Graph Description: Which issue does this PR close? Closes Cannot do udaf that returns list of timestamps #1339. Rationale for this change Python UDAFs that logically return a list (e.g., “collect all timestamps for...

X Description: Which issue does this PR close? Closes Cannot do udaf that returns list of timestamps #1339. Rationale for this change Python UDAFs that logically return a list (e.g., “collect all timestamps for...

Opengraph URL: https://github.com/apache/datafusion-python/pull/1347

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og:image:altWhich issue does this PR close? Closes Cannot do udaf that returns list of timestamps #1339. Rationale for this change Python UDAFs that logically return a list (e.g., “collect all timestamps for...
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Fix Python UDAF list-of-timestamps return by enforcing list-valued scalars and caching PyArrow types https://github.com/apache/datafusion-python/pull/1347#top
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Jan 20, 2026https://github.com/apache/datafusion-python/pull/1347#issue-3832091203
Cannot do udaf that returns list of timestamps #1339https://github.com/apache/datafusion-python/issues/1339
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January 20, 2026 13:16https://github.com/apache/datafusion-python/pull/1347#commits-pushed-5f10176
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Implement UDAF improvements for list type handlinghttps://github.com/apache/datafusion-python/pull/1347/commits/5f101761d988e8730a57e9975de670742e2eec04
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Document UDAF list-valued scalar returnshttps://github.com/apache/datafusion-python/pull/1347/commits/fbba2a03c6d437e0cdf2f98e45c15d4f085bc971
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Fix pyarrow calls and improve type handling in RustAccumulatorhttps://github.com/apache/datafusion-python/pull/1347/commits/21906bbe43c5fb6f65e92100e0fe05d9936d8a67
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Refactor RustAccumulator to support pyarrow array types and improve t…https://github.com/apache/datafusion-python/pull/1347/commits/7f363a7384a1d4c430bbb5358afc7aedf4b46a03
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Fixed PyO3 type mismatch by cloning Array/ChunkedArray types before u…https://github.com/apache/datafusion-python/pull/1347/commits/5271ba2b0e980c5e83c2b4d68748f08f13e381ab
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Add timezone information to datetime objects in test_udaf_list_timest…https://github.com/apache/datafusion-python/pull/1347/commits/9c59258e63511b12638d88e999d2bf502acdf094
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clippy fixhttps://github.com/apache/datafusion-python/pull/1347/commits/6742954c0383ab9590cbde4275130addd967f14f
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