René's URL Explorer Experiment


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

X: @github

direct link

Domain: patch-diff.githubusercontent.com

route-pattern/_view_fragments/voltron/pull_requests/show/:user_id/:repository/:id/pull_request_layout(.:format)
route-controllervoltron_pull_requests_fragments
route-actionpull_request_layout
fetch-noncev2:c02e774c-1d75-3181-142a-5d7e91937f90
current-catalog-service-hashae870bc5e265a340912cde392f23dad3671a0a881730ffdadd82f2f57d81641b
request-idA946:300F19:6878C33:86BDB57:6976128C
html-safe-nonce33fd9365f783814a825e7671841fe9a362dd0e5394c387ee7f4eb603d361115c
visitor-payloadeyJyZWZlcnJlciI6IiIsInJlcXVlc3RfaWQiOiJBOTQ2OjMwMEYxOTo2ODc4QzMzOjg2QkRCNTc6Njk3NjEyOEMiLCJ2aXNpdG9yX2lkIjoiODM5MjgzMjQ4MDA2MjA4MzcyNCIsInJlZ2lvbl9lZGdlIjoiaWFkIiwicmVnaW9uX3JlbmRlciI6ImlhZCJ9
visitor-hmaca8a6873838da1ecd9e6b8ee2a11fef079f4236aa5d2b25a34dd493ad21792224
hovercard-subject-tagpull_request:3189854102
github-keyboard-shortcutsrepository,pull-request-list,pull-request-conversation,pull-request-files-changed,copilot
google-site-verificationApib7-x98H0j5cPqHWwSMm6dNU4GmODRoqxLiDzdx9I
octolytics-urlhttps://collector.github.com/github/collect
analytics-location///voltron/pull_requests_fragments/pull_request_layout
fb:app_id1401488693436528
apple-itunes-appapp-id=1477376905, app-argument=https://github.com/_view_fragments/voltron/pull_requests/show/apache/datafusion-python/1347/pull_request_layout
twitter:imagehttps://opengraph.githubassets.com/6029ec185d6dfdd5abdbb8b353a53865ac4ddf24640a2fc16f94e369de378a55/apache/datafusion-python/pull/1347
twitter:cardsummary_large_image
og:imagehttps://opengraph.githubassets.com/6029ec185d6dfdd5abdbb8b353a53865ac4ddf24640a2fc16f94e369de378a55/apache/datafusion-python/pull/1347
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...
og:image:width1200
og:image:height600
og:site_nameGitHub
og:typeobject
og:author:usernamekosiew
hostnamegithub.com
expected-hostnamegithub.com
Nonec6814b4cc7afd45cd6e64525d0cff0e76dd802f315a5b0e55a7abda1d1d070d0
turbo-cache-controlno-preview
go-importgithub.com/apache/datafusion-python git https://github.com/apache/datafusion-python.git
octolytics-dimension-user_id47359
octolytics-dimension-user_loginapache
octolytics-dimension-repository_id515951203
octolytics-dimension-repository_nwoapache/datafusion-python
octolytics-dimension-repository_publictrue
octolytics-dimension-repository_is_forkfalse
octolytics-dimension-repository_network_root_id515951203
octolytics-dimension-repository_network_root_nwoapache/datafusion-python
turbo-body-classeslogged-out env-production page-responsive
disable-turbofalse
browser-stats-urlhttps://api.github.com/_private/browser/stats
browser-errors-urlhttps://api.github.com/_private/browser/errors
release4ea235bfed58ef16c8a5642b3ac64b74f10c9f52
ui-targetfull
theme-color#1e2327
color-schemelight dark

Links:

Skip to contenthttps://patch-diff.githubusercontent.com/apache/datafusion-python/pull/1347#start-of-content
https://patch-diff.githubusercontent.com/
Sign in https://patch-diff.githubusercontent.com/login?return_to=https%3A%2F%2Fgithub.com%2Fapache%2Fdatafusion-python%2Fpull%2F1347
GitHub CopilotWrite better code with AIhttps://github.com/features/copilot
GitHub SparkBuild and deploy intelligent appshttps://github.com/features/spark
GitHub ModelsManage and compare promptshttps://github.com/features/models
MCP RegistryNewIntegrate external toolshttps://github.com/mcp
ActionsAutomate any workflowhttps://github.com/features/actions
CodespacesInstant dev environmentshttps://github.com/features/codespaces
IssuesPlan and track workhttps://github.com/features/issues
Code ReviewManage code changeshttps://github.com/features/code-review
GitHub Advanced SecurityFind and fix vulnerabilitieshttps://github.com/security/advanced-security
Code securitySecure your code as you buildhttps://github.com/security/advanced-security/code-security
Secret protectionStop leaks before they starthttps://github.com/security/advanced-security/secret-protection
Why GitHubhttps://github.com/why-github
Documentationhttps://docs.github.com
Bloghttps://github.blog
Changeloghttps://github.blog/changelog
Marketplacehttps://github.com/marketplace
View all featureshttps://github.com/features
Enterpriseshttps://github.com/enterprise
Small and medium teamshttps://github.com/team
Startupshttps://github.com/enterprise/startups
Nonprofitshttps://github.com/solutions/industry/nonprofits
App Modernizationhttps://github.com/solutions/use-case/app-modernization
DevSecOpshttps://github.com/solutions/use-case/devsecops
DevOpshttps://github.com/solutions/use-case/devops
CI/CDhttps://github.com/solutions/use-case/ci-cd
View all use caseshttps://github.com/solutions/use-case
Healthcarehttps://github.com/solutions/industry/healthcare
Financial serviceshttps://github.com/solutions/industry/financial-services
Manufacturinghttps://github.com/solutions/industry/manufacturing
Governmenthttps://github.com/solutions/industry/government
View all industrieshttps://github.com/solutions/industry
View all solutionshttps://github.com/solutions
AIhttps://github.com/resources/articles?topic=ai
Software Developmenthttps://github.com/resources/articles?topic=software-development
DevOpshttps://github.com/resources/articles?topic=devops
Securityhttps://github.com/resources/articles?topic=security
View all topicshttps://github.com/resources/articles
Customer storieshttps://github.com/customer-stories
Events & webinarshttps://github.com/resources/events
Ebooks & reportshttps://github.com/resources/whitepapers
Business insightshttps://github.com/solutions/executive-insights
GitHub Skillshttps://skills.github.com
Documentationhttps://docs.github.com
Customer supporthttps://support.github.com
Community forumhttps://github.com/orgs/community/discussions
Trust centerhttps://github.com/trust-center
Partnershttps://github.com/partners
GitHub SponsorsFund open source developershttps://github.com/sponsors
Security Labhttps://securitylab.github.com
Maintainer Communityhttps://maintainers.github.com
Acceleratorhttps://github.com/accelerator
Archive Programhttps://archiveprogram.github.com
Topicshttps://github.com/topics
Trendinghttps://github.com/trending
Collectionshttps://github.com/collections
Enterprise platformAI-powered developer platformhttps://github.com/enterprise
GitHub Advanced SecurityEnterprise-grade security featureshttps://github.com/security/advanced-security
Copilot for BusinessEnterprise-grade AI featureshttps://github.com/features/copilot/copilot-business
Premium SupportEnterprise-grade 24/7 supporthttps://github.com/premium-support
Pricinghttps://github.com/pricing
Search syntax tipshttps://docs.github.com/search-github/github-code-search/understanding-github-code-search-syntax
documentationhttps://docs.github.com/search-github/github-code-search/understanding-github-code-search-syntax
Sign in https://patch-diff.githubusercontent.com/login?return_to=https%3A%2F%2Fgithub.com%2Fapache%2Fdatafusion-python%2Fpull%2F1347
Sign up https://patch-diff.githubusercontent.com/signup?ref_cta=Sign+up&ref_loc=header+logged+out&ref_page=%2F%3Cuser-name%3E%2F%3Crepo-name%3E%2Fvoltron%2Fpull_requests_fragments%2Fpull_request_layout&source=header-repo&source_repo=apache%2Fdatafusion-python
Reloadhttps://patch-diff.githubusercontent.com/apache/datafusion-python/pull/1347
Reloadhttps://patch-diff.githubusercontent.com/apache/datafusion-python/pull/1347
Reloadhttps://patch-diff.githubusercontent.com/apache/datafusion-python/pull/1347
apache https://patch-diff.githubusercontent.com/apache
datafusion-pythonhttps://patch-diff.githubusercontent.com/apache/datafusion-python
Notifications https://patch-diff.githubusercontent.com/login?return_to=%2Fapache%2Fdatafusion-python
Fork 142 https://patch-diff.githubusercontent.com/login?return_to=%2Fapache%2Fdatafusion-python
Star 553 https://patch-diff.githubusercontent.com/login?return_to=%2Fapache%2Fdatafusion-python
Code https://patch-diff.githubusercontent.com/apache/datafusion-python
Issues 80 https://patch-diff.githubusercontent.com/apache/datafusion-python/issues
Pull requests 27 https://patch-diff.githubusercontent.com/apache/datafusion-python/pulls
Actions https://patch-diff.githubusercontent.com/apache/datafusion-python/actions
Security 0 https://patch-diff.githubusercontent.com/apache/datafusion-python/security
Insights https://patch-diff.githubusercontent.com/apache/datafusion-python/pulse
Code https://patch-diff.githubusercontent.com/apache/datafusion-python
Issues https://patch-diff.githubusercontent.com/apache/datafusion-python/issues
Pull requests https://patch-diff.githubusercontent.com/apache/datafusion-python/pulls
Actions https://patch-diff.githubusercontent.com/apache/datafusion-python/actions
Security https://patch-diff.githubusercontent.com/apache/datafusion-python/security
Insights https://patch-diff.githubusercontent.com/apache/datafusion-python/pulse
Sign up for GitHub https://patch-diff.githubusercontent.com/signup?return_to=%2Fapache%2Fdatafusion-python%2Fissues%2Fnew%2Fchoose
terms of servicehttps://docs.github.com/terms
privacy statementhttps://docs.github.com/privacy
Sign inhttps://patch-diff.githubusercontent.com/login?return_to=%2Fapache%2Fdatafusion-python%2Fissues%2Fnew%2Fchoose
Jump to bottomhttps://patch-diff.githubusercontent.com/apache/datafusion-python/pull/1347#issue-comment-box
kosiewhttps://patch-diff.githubusercontent.com/kosiew
apache:mainhttps://patch-diff.githubusercontent.com/apache/datafusion-python/tree/main
kosiew:typeconversion-issue-1339https://patch-diff.githubusercontent.com/kosiew/datafusion-python/tree/typeconversion-issue-1339
Fix Python UDAF list-of-timestamps return by enforcing list-valued scalars and caching PyArrow types https://patch-diff.githubusercontent.com/apache/datafusion-python/pull/1347#top
kosiewhttps://patch-diff.githubusercontent.com/kosiew
apache:mainhttps://patch-diff.githubusercontent.com/apache/datafusion-python/tree/main
kosiew:typeconversion-issue-1339https://patch-diff.githubusercontent.com/kosiew/datafusion-python/tree/typeconversion-issue-1339
Conversation 0 https://patch-diff.githubusercontent.com/apache/datafusion-python/pull/1347
Commits 7 https://patch-diff.githubusercontent.com/apache/datafusion-python/pull/1347/commits
Checks 17 https://patch-diff.githubusercontent.com/apache/datafusion-python/pull/1347/checks
Files changed 4 https://patch-diff.githubusercontent.com/apache/datafusion-python/pull/1347/files
https://github.co/hiddenchars
https://patch-diff.githubusercontent.com/apache/datafusion-python/pull/{{ revealButtonHref }}
https://patch-diff.githubusercontent.com/kosiew
kosiewhttps://patch-diff.githubusercontent.com/kosiew
Jan 20, 2026https://patch-diff.githubusercontent.com/apache/datafusion-python/pull/1347#issue-3832091203
Cannot do udaf that returns list of timestamps #1339https://github.com/apache/datafusion-python/issues/1339
Please reload this pagehttps://patch-diff.githubusercontent.com/apache/datafusion-python/pull/1347
kosiewhttps://patch-diff.githubusercontent.com/kosiew
January 20, 2026 13:16https://patch-diff.githubusercontent.com/apache/datafusion-python/pull/1347#commits-pushed-5f10176
https://patch-diff.githubusercontent.com/kosiew
Implement UDAF improvements for list type handlinghttps://patch-diff.githubusercontent.com/apache/datafusion-python/pull/1347/commits/5f101761d988e8730a57e9975de670742e2eec04
5f10176https://patch-diff.githubusercontent.com/apache/datafusion-python/pull/1347/commits/5f101761d988e8730a57e9975de670742e2eec04
https://patch-diff.githubusercontent.com/kosiew
Document UDAF list-valued scalar returnshttps://patch-diff.githubusercontent.com/apache/datafusion-python/pull/1347/commits/fbba2a03c6d437e0cdf2f98e45c15d4f085bc971
fbba2a0https://patch-diff.githubusercontent.com/apache/datafusion-python/pull/1347/commits/fbba2a03c6d437e0cdf2f98e45c15d4f085bc971
https://patch-diff.githubusercontent.com/kosiew
Fix pyarrow calls and improve type handling in RustAccumulatorhttps://patch-diff.githubusercontent.com/apache/datafusion-python/pull/1347/commits/21906bbe43c5fb6f65e92100e0fe05d9936d8a67
21906bbhttps://patch-diff.githubusercontent.com/apache/datafusion-python/pull/1347/commits/21906bbe43c5fb6f65e92100e0fe05d9936d8a67
https://patch-diff.githubusercontent.com/kosiew
Refactor RustAccumulator to support pyarrow array types and improve t…https://patch-diff.githubusercontent.com/apache/datafusion-python/pull/1347/commits/7f363a7384a1d4c430bbb5358afc7aedf4b46a03
7f363a7https://patch-diff.githubusercontent.com/apache/datafusion-python/pull/1347/commits/7f363a7384a1d4c430bbb5358afc7aedf4b46a03
https://patch-diff.githubusercontent.com/kosiew
Fixed PyO3 type mismatch by cloning Array/ChunkedArray types before u…https://patch-diff.githubusercontent.com/apache/datafusion-python/pull/1347/commits/5271ba2b0e980c5e83c2b4d68748f08f13e381ab
5271ba2https://patch-diff.githubusercontent.com/apache/datafusion-python/pull/1347/commits/5271ba2b0e980c5e83c2b4d68748f08f13e381ab
https://patch-diff.githubusercontent.com/kosiew
Add timezone information to datetime objects in test_udaf_list_timest…https://patch-diff.githubusercontent.com/apache/datafusion-python/pull/1347/commits/9c59258e63511b12638d88e999d2bf502acdf094
9c59258https://patch-diff.githubusercontent.com/apache/datafusion-python/pull/1347/commits/9c59258e63511b12638d88e999d2bf502acdf094
https://patch-diff.githubusercontent.com/kosiew
clippy fixhttps://patch-diff.githubusercontent.com/apache/datafusion-python/pull/1347/commits/6742954c0383ab9590cbde4275130addd967f14f
6742954https://patch-diff.githubusercontent.com/apache/datafusion-python/pull/1347/commits/6742954c0383ab9590cbde4275130addd967f14f
Sign up for freehttps://patch-diff.githubusercontent.com/join?source=comment-repo
Sign in to commenthttps://patch-diff.githubusercontent.com/login?return_to=https%3A%2F%2Fgithub.com%2Fapache%2Fdatafusion-python%2Fpull%2F1347
Cannot do udaf that returns list of timestamps https://github.com/apache/datafusion-python/issues/1339
Please reload this pagehttps://patch-diff.githubusercontent.com/apache/datafusion-python/pull/1347
https://patch-diff.githubusercontent.com/kosiew
https://github.com
Termshttps://docs.github.com/site-policy/github-terms/github-terms-of-service
Privacyhttps://docs.github.com/site-policy/privacy-policies/github-privacy-statement
Securityhttps://github.com/security
Statushttps://www.githubstatus.com/
Communityhttps://github.community/
Docshttps://docs.github.com/
Contacthttps://support.github.com?tags=dotcom-footer

Viewport: width=device-width


URLs of crawlers that visited me.