apache/arrow

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Apache Arrow is the universal columnar format and multi-language toolbox for fast data interchange and in-memory analytics

Stars: 17.1k
Forks: 4.3k
Open beginner issues: 0
Indexed issues: 2.2k
Avg merge: 3d 23h
Merged PRs (30d): 100

Dominant language: C++
License: Apache-2.0
Last GitHub push: Sep 18, 2026
Latest indexed: Sep 14, 2026
Contributing guide: Contributing guide
Code of conduct: Code of conduct
Beginner labels: good first issue

Beginner friendly Everything

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28 beginner-friendly issues open

[C++] GZipCodec::Init does deflateInit and immediately throws it away Open

Component: C++ Type: bug

Difficulty 2/5 1-3 hours Newbie friendliness 76/100

apache/arrow#51308 · Opened Sep 11, 2026
[CI][Dev][Archery] Default ARCHERY_DEBUG to True on archery docker commands Open

Component: Archery Component: Continuous Integration Component: Developer Tools Type: enhancement

Difficulty 2/5 1-3 hours Newbie friendliness 70/100

apache/arrow#51256 · 5 comments · Opened Sep 9, 2026
[Python] `call_tabular_function()` segfaults for some wrong typed `func_registry` values Open

Component: Python Type: bug

Difficulty 2/5 1-3 hours Newbie friendliness 82/100

apache/arrow#51228 · Opened Sep 8, 2026
[C++] Bump vendored utfcpp Open

Component: C++ Type: enhancement

Difficulty 2/5 1-3 hours Newbie friendliness 72/100

apache/arrow#51009 · 1 comment · Opened Aug 26, 2026
[C++] Remove vendored whereami Open

Component: C++ Type: bug

Difficulty 2/5 1-3 hours Newbie friendliness 68/100

apache/arrow#51008 · 3 comments · Opened Aug 26, 2026
[CI][Python] CMakeLists detects ccache but not sccache Open

Component: Continuous Integration Component: Python Type: enhancement

Difficulty 2/5 1-3 hours Newbie friendliness 68/100

apache/arrow#50996 · 6 comments · Opened Aug 25, 2026
[C++][FlightRPC][ODBC] Add SQLGetInfo missing tests Open

Component: C++ Component: FlightRPC Type: enhancement

Difficulty 2/5 1-3 hours Newbie friendliness 68/100

apache/arrow#50828 · 1 comment · Opened Aug 6, 2026
[Docs][Doc][C++] run-end-encoding functions not listed in compute functions Open

Component: C++ Component: Documentation good-second-issue Type: bug

Difficulty 1/5 Under an hour Newbie friendliness 85/100

apache/arrow#50735 · 2 comments · Opened Jul 30, 2026
[Docs][Format] Make Variant value field mandatory Open

Component: Format Type: enhancement

Difficulty 2/5 1-3 hours Newbie friendliness 72/100

apache/arrow#50620 · 2 comments · Opened Jul 23, 2026
Apache Arrow Substrait `DeserializePlan` fatal `ARROW_CHECK` abort on out-of-range decimal precision (`Decimal128Type` ctor via `FromProtoImpl` make_shared bypass) Open

Difficulty 2/5 1-3 hours Newbie friendliness 74/100

apache/arrow#50230 · Opened Jun 19, 2026
[C++] Update bundled RE2 Open

Component: C++ Type: enhancement

Difficulty 2/5 1-3 hours Newbie friendliness 68/100

apache/arrow#50155 · Opened Jun 11, 2026
[Docs] Add licensing header to C data interface in docs Open

Component: Documentation Type: enhancement

Difficulty 2/5 1-3 hours Newbie friendliness 68/100

apache/arrow#50119 · 11 comments · Opened Jun 7, 2026
[C++][FlightRPC][ODBC] Simplify package_odbc.yml Open

Component: C++ Component: FlightRPC Type: enhancement

Difficulty 2/5 1-3 hours Newbie friendliness 82/100

apache/arrow#50100 · Opened Jun 4, 2026
[Docs][C++][Parquet] Add API reference Open

Component: C++ Component: Documentation Component: Parquet Type: enhancement

Difficulty 2/5 1-2 days Newbie friendliness 68/100

apache/arrow#49983 · 1 comment · 1 reaction · Opened May 18, 2026
[CI][C++] Set test include/exclude by environment variable Open

Component: C++ Component: Packaging Type: enhancement

Difficulty 2/5 1-3 hours Newbie friendliness 68/100

apache/arrow#49842 · Opened Apr 22, 2026
[Release][C++] C++ Extra workflow for the `apache-arrow-24.0.0-rc0` was canceled Open

Component: C++ Component: Release Type: bug

Difficulty 2/5 1-3 hours Newbie friendliness 68/100

apache/arrow#49749 · 2 comments · Opened Apr 14, 2026
[Python] `Array.from_buffers` docs should mention safety issues Open

Component: Python Type: enhancement

Difficulty 2/5 1-3 hours Newbie friendliness 68/100

apache/arrow#49717 · 1 comment · Opened Apr 13, 2026
Inspecting cmake presets options not available in cmake 4.x Open

Component: C++ Type: bug

Difficulty 2/5 1-3 hours Newbie friendliness 68/100

apache/arrow#49605 · 4 comments · Opened Mar 27, 2026
[C++][Arrow Flight SQL ODBC] Fix value for `lpstrFilter` Open

Component: C++ Component: FlightRPC Type: enhancement

Difficulty 1/5 Under an hour Newbie friendliness 68/100

apache/arrow#47851 · Opened Oct 17, 2025
[C++][Arrow Flight SQL ODBC] Document attributes for `StatementAttributeId` Open

Component: C++ Component: FlightRPC Type: enhancement

Difficulty 1/5 1-3 hours Newbie friendliness 72/100

apache/arrow#47850 · Opened Oct 17, 2025
[Python][C++] Update type definition of npy_traits for Float16 to arrow::util::Float16 instead of uint16_t Open

Component: C++ Component: Python Status: needs champion Type: enhancement

Difficulty 1/5 Under an hour Newbie friendliness 78/100

apache/arrow#46701 · 1 comment · Opened Jun 4, 2025
[C++][Docs] Improve documentation of our security model Open

Component: C++ Component: Documentation Type: enhancement

Difficulty 1/5 1-3 hours Newbie friendliness 72/100

apache/arrow#46218 · 8 comments · Opened Apr 24, 2025
[Python][Docs] Use editable pip install invocation in the development docs for PyArrow Open

Component: Documentation Component: Python

Difficulty 2/5 1-3 hours Newbie friendliness 62/100

apache/arrow#43845 · 1 comment · Opened Aug 27, 2024
[Docs] Bug: Wrong property keys in the Arrow Flight JDBC Driver documentation Open

Component: Documentation Type: bug

Difficulty 2/5 1-3 hours Newbie friendliness 62/100

apache/arrow#40492 · Opened Mar 12, 2024
[R] Bump the default format version from 2.4 -> 2.6 Open

Component: R Type: enhancement

Difficulty 1/5 Under an hour Newbie friendliness 72/100

apache/arrow#36532 · 2 comments · 1 reaction · Opened Jul 7, 2023
[R][Doc] Remove discussion of Scanner from vignettes Open

Component: Documentation Component: R Type: enhancement

Difficulty 2/5 1-3 hours Newbie friendliness 65/100

apache/arrow#34940 · 1 comment · 1 reaction · Opened Apr 6, 2023
[Python][Docs] Opening a partitioned dataset with schema and filter Open

Component: Documentation Component: Python good-first-issue Status: needs champion Type: enhancement

Difficulty 2/5 1-3 hours Newbie friendliness 72/100

apache/arrow#30800 · 2 comments · Opened Jan 12, 2022
[Format] Make requirement around dense union offsets less ambiguous Open

Component: Format Type: task

Difficulty 2/5 1-3 hours Newbie friendliness 68/100

apache/arrow#18760 · 4 comments · Opened Jul 28, 2021

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