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 20h
Merged PRs (30d): 94

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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2,130 open issues indexed

read_parquet super slow Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

apache/arrow#13720 · 9 comments · 1 reaction · Opened Jul 26, 2022
[Docs][Benchmarking] Add info about the use of benchmarking hooks on the PR Open

Component: Benchmarking Component: Documentation good-first-issue Type: enhancement

apache/arrow#32503 · 2 comments · 1 assignee · Opened Jul 26, 2022
[R] Removing files after reading them in R Open

Component: R Type: bug

Difficulty 4/5 3-5 days Newbie friendliness 35/100

apache/arrow#32497 · 2 comments · Opened Jul 26, 2022
[C++][CI] Occasional timeout failures on arrow-compute-scalar-test Open

Component: C++ Type: bug

apache/arrow#32496 · 2 comments · 1 assignee · Opened Jul 26, 2022
[R] Cannot override environmental variables setting AWS S3 region Open

Component: R Type: task

Difficulty 4/5 3-5 days Newbie friendliness 35/100

apache/arrow#32493 · Opened Jul 25, 2022
[C++] Potential memory leak at shutdown if an exec plan with a scanner fails or is aborted immediately before shutdown Open

Component: C++ Type: bug

Difficulty 4/5 3-5 days Newbie friendliness 25/100

apache/arrow#20338 · 1 comment · Opened Jul 25, 2022
Is any plan to develop 'utf8_slice_charunits' like existed 'utf8_slice_codeunits' Open

Difficulty 5/5 Over a week Newbie friendliness 20/100

apache/arrow#13701 · 8 comments · Opened Jul 25, 2022
[Docs] Create Documentation for Fetch Sink Node Open

Type: task

Difficulty 3/5 1-2 days Newbie friendliness 35/100

apache/arrow#32489 · 1 comment · Opened Jul 25, 2022
[C++] Create a Fetch Node Open

Type: task

Difficulty 4/5 3-5 days Newbie friendliness 25/100

apache/arrow#32484 · 2 comments · Opened Jul 23, 2022
[C++][Docs] Verify Completeness of API Reference Open

Component: C++ Component: Documentation Type: task

Difficulty 4/5 3-5 days Newbie friendliness 35/100

apache/arrow#32481 · 2 comments · Opened Jul 22, 2022
[C++][Docs] Show examples of multiple Acero-compatible language APIs Open

Component: C++ Component: Documentation Type: task

Difficulty 4/5 3-5 days Newbie friendliness 35/100

apache/arrow#32477 · Opened Jul 22, 2022
[C++][Docs] Re-Organize the Existing Acero Streaming Engine Documentation Open

Component: C++ Component: Documentation Type: task

Difficulty 4/5 3-5 days Newbie friendliness 25/100

apache/arrow#20334 · 2 comments · Opened Jul 22, 2022
[C++][Docs] Expand C++ Cookbook Open

Component: C++ Component: Documentation Type: task

Difficulty 4/5 Over a week Newbie friendliness 35/100

apache/arrow#32465 · 1 comment · Opened Jul 21, 2022
[C++] Compilation warnings on gcc in release mode Open

Component: C++ Type: bug

Difficulty 3/5 1-2 days Newbie friendliness 32/100

apache/arrow#32445 · 1 comment · Opened Jul 20, 2022
[C++] HadoopFileSystem open_append_stream throwing an error if file does not exists Open

Component: C++ good-first-issue Type: bug

Difficulty 4/5 3-5 days Newbie friendliness 35/100

apache/arrow#32438 · 1 comment · Opened Jul 20, 2022
[C++] Data race between future signalling and destruction Open

Component: C++ Type: bug

Difficulty 4/5 3-5 days Newbie friendliness 35/100

apache/arrow#32426 · 4 comments · Opened Jul 19, 2022
[C++][R] copy_files() does not take paths to specific files Open

Component: C++ Component: R Type: enhancement

Difficulty 4/5 3-5 days Newbie friendliness 35/100

apache/arrow#20324 · 3 comments · Opened Jul 19, 2022
[R] Add translation for dplyr::na_if() Open

Component: R Type: task

Difficulty 3/5 1-2 days Newbie friendliness 45/100

apache/arrow#32397 · Opened Jul 15, 2022
Unicode character issue with pyarrow Open

Component: Python Type: bug

Difficulty 4/5 3-5 days Newbie friendliness 25/100

apache/arrow#32384 · Opened Jul 14, 2022
[Python] Python hangs when use pyarrow.fs.copy_files with "used_threads=True" Open

Component: Python Type: bug

Difficulty 4/5 3-5 days Newbie friendliness 35/100

apache/arrow#32372 · 5 comments · 1 reaction · Opened Jul 13, 2022
[Python][Substrait] Acero consumer is unable to consume count function from substrait query plan Open

Component: Python Type: bug

Difficulty 4/5 3-5 days Newbie friendliness 25/100

apache/arrow#32369 · 3 comments · Opened Jul 12, 2022
Timezone aware parquet read with schema and filters Open

Component: Parquet Component: Python Type: bug

Difficulty 4/5 3-5 days Newbie friendliness 35/100

apache/arrow#32366 · Opened Jul 12, 2022
[R] Update make_date, make_datetime, ISOdate and ISOdatetime to use `tz` Open

Component: R Status: needs champion Type: enhancement

Difficulty 3/5 1-2 days Newbie friendliness 38/100

apache/arrow#32361 · 4 comments · Opened Jul 12, 2022
[C++] temporal addition and subtraction with integers Open

Component: C++ Type: task

Difficulty 4/5 3-5 days Newbie friendliness 42/100

apache/arrow#32352 · Opened Jul 11, 2022
[C++] Add GCS connection pool size option Open

Component: C++ good-first-issue Type: enhancement

apache/arrow#20314 · 4 comments · 1 assignee · Opened Jul 10, 2022
[Docs][C++] Guide to to work with RLE data (in kernels?) Open

Component: C++ Component: Documentation Type: task

Difficulty 4/5 3-5 days Newbie friendliness 35/100

apache/arrow#32340 · Opened Jul 9, 2022
[C++] Reading and Writing RLE data from/to Parquet Open

Component: C++ Component: Parquet Type: task

apache/arrow#32339 · 9 comments · 1 assignee · Opened Jul 9, 2022
[C++] Add RLE benchmarks Open

Component: C++ Type: task

Difficulty 3/5 1-2 days Newbie friendliness 20/100

apache/arrow#32337 · 1 comment · Opened Jul 9, 2022
[Python][R] GcsFilesystem can appear to hang for non permanent errors Open

Component: Python Component: R Type: bug

Difficulty 4/5 3-5 days Newbie friendliness 35/100

apache/arrow#32332 · 2 comments · Opened Jul 8, 2022
[R] dplyr queries create locks on FileSystemDataset files Open

Component: R Type: bug

Difficulty 4/5 3-5 days Newbie friendliness 35/100

apache/arrow#32315 · 1 comment · Opened Jul 7, 2022
[Python] Results of running a substrait plan against a tpch data table written into parquet are all null Open

Component: Python Type: bug

Difficulty 4/5 3-5 days Newbie friendliness 35/100

apache/arrow#32296 · Opened Jul 5, 2022
[C++] Reconsider filesystem equality Open

Component: C++ Type: task

Difficulty 5/5 Over a week Newbie friendliness 25/100

apache/arrow#32247 · 2 comments · Opened Jun 28, 2022
[Python] Table.to_pandas() fails for dictionary encoded columns with an is_null partition_expression Open

Component: C++ Component: Python Type: bug

Difficulty 4/5 3-5 days Newbie friendliness 35/100

apache/arrow#32225 · Opened Jun 25, 2022
[R] Warning message: In install.packages("arrow") : installation of package ‘arrow’ had non-zero exit status Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

apache/arrow#13425 · 8 comments · Opened Jun 23, 2022
[R] Bindings for GcsFileSystem FromImpersonatedServiceAccount Open

Component: R good-first-issue Type: task

Difficulty 4/5 3-5 days Newbie friendliness 25/100

apache/arrow#32207 · Opened Jun 22, 2022
Partition column type is modified after write/read Open

Type: bug

Difficulty 4/5 3-5 days Newbie friendliness 42/100

apache/arrow#32191 · Opened Jun 21, 2022
[C++] Adding Aggregate Relation ToProto Open

Component: C++ Type: task

Difficulty 4/5 3-5 days Newbie friendliness 35/100

apache/arrow#32184 · 1 comment · Opened Jun 20, 2022
[C++] Adding Join Relation ToProto Open

Type: task

Difficulty 4/5 3-5 days Newbie friendliness 25/100

apache/arrow#32183 · 1 comment · Opened Jun 20, 2022
[C++] Adding Project Relation ToProto Open

Type: task

Difficulty 4/5 3-5 days Newbie friendliness 15/100

apache/arrow#32182 · 2 comments · Opened Jun 20, 2022
[C++] ArraySpan::IsNull/IsValid implementations are incorrect for union types Open

Component: C++ Type: bug

Difficulty 4/5 3-5 days Newbie friendliness 35/100

apache/arrow#32172 · Opened Jun 16, 2022
[Python][CSV] CSV reader performs unsafe type conversion Open

Component: Python Type: bug

Difficulty 4/5 3-5 days Newbie friendliness 38/100

apache/arrow#32171 · 11 comments · Opened Jun 16, 2022
[C++] Investigate performance regressions observed in Unique, VisitArraySpanInline Open

Component: C++ Type: bug

Difficulty 4/5 3-5 days Newbie friendliness 25/100

apache/arrow#32166 · 1 comment · Opened Jun 15, 2022
[Python] exitCode: <139> when csv file converting parquet using pandas/pyarrow libraries Open

Component: Parquet Component: Python Type: bug

Difficulty 4/5 3-5 days Newbie friendliness 25/100

apache/arrow#32152 · 4 comments · Opened Jun 13, 2022
'--record plist' doesn't record a complete plist Open

Component: Python Type: bug

Difficulty 3/5 1-2 days Newbie friendliness 35/100

apache/arrow#32151 · Opened Jun 12, 2022
C++ project doesn't need to require Numpy with ARROW_PYTHON=ON because it only builds Python extension's support libraries Open

Component: Python Type: bug

Difficulty 4/5 3-5 days Newbie friendliness 35/100

apache/arrow#32150 · 1 comment · Opened Jun 12, 2022
"Edit this page" on docstring generated docs gives 404 Open

Component: Documentation Status: needs champion Type: bug

Difficulty 3/5 1-2 days Newbie friendliness 48/100

apache/arrow#32143 · 1 comment · Opened Jun 10, 2022
[Python] PyArrow: write_dataset - Could not open CSV input source Open

Component: Python Type: bug

Difficulty 3/5 1-2 days Newbie friendliness 38/100

apache/arrow#32141 · 4 comments · Opened Jun 10, 2022
Casting a decimal column of a table into a float type when converting a table into a pandas dataframe Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

apache/arrow#13353 · 5 comments · Opened Jun 9, 2022
[C++] Complete RunLengthEncoded type Open

Component: C++ Type: task

Difficulty 4/5 3-5 days Newbie friendliness 35/100

apache/arrow#32114 · 1 comment · Opened Jun 7, 2022
[C++] 32 bit MSVC doesn't build Open

Component: C++ Type: bug

Difficulty 4/5 3-5 days Newbie friendliness 25/100

apache/arrow#32111 · 41 comments · Opened Jun 7, 2022

apache/arrow

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