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): 101

Dominant language: C++
License: Apache-2.0
Last GitHub push: Sep 12, 2026
Latest indexed: Sep 14, 2026
Contributing guide: Contributing guide
Code of conduct: Code of conduct
Beginner labels: good first issue

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2142 open issues indexed

[Python] Get size of IPC File ahead of time Open

Component: Python Status: needs champion Type: usage

apache/arrow#42033 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
pyarrow.fs.FileSystem.from_uri does not refer to HDFS core-site.xml config file when resolving namenode for HDFS URL Open

Component: C++ Component: Python Type: bug

apache/arrow#42050 · 3 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[CI][Python] AMD64 Conda Python 3.8 Pandas 1.0 is failing on some PRs due to out of disk space Open

Component: Continuous Integration Component: Python Type: bug

apache/arrow#42144 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[Python] AWS SDK 1.11 support in pyarrow wheels? Open

Component: Python Type: bug

apache/arrow#42154 · 14 comments · 4 reactions · 0 assignees · Indexed Sep 14, 2026
[C++][Python] Date and time errors with slim zoneinfo files Open

Component: C++ Type: bug

apache/arrow#42157 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[pyarrow] compute.count_distinct segfaults or gives incorrect results when given a chunked string array greater than 2G in size Open

Component: C++ Component: Python Type: bug

apache/arrow#42200 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[C++] Add support for system mimalloc Open

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

apache/arrow#42211 · 1 comment · 4 reactions · 0 assignees · Indexed Sep 14, 2026
[C++] Support STRING_VIEW and BINARY_VIEW in "array_take" and "array_filter" functions Open

Component: C++ Type: bug

apache/arrow#43010 · 2 comments · 0 reactions · 1 assignee · Indexed Sep 14, 2026
[C++][GPU] Writing sliced GPU record batches to IPC Open

Component: C++ Component: GPU Type: enhancement

apache/arrow#43029 · 6 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[C++] Overflow in `subtract_checked(timestamp, timestamp)` after casting to pandas and back. Open

Component: C++ Component: Python Type: bug

apache/arrow#43031 · 3 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[CI] Docker linter checks nothing Open

Component: Continuous Integration Type: bug

apache/arrow#43032 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[Python] `pyarrow` fails to install on PowerPC because Python (?) does not recognize the target: `not a supported wheel on this platform` Open

Component: Python installation Type: bug

apache/arrow#43067 · 5 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[CI][Dev] Add shell script formatter Open

Component: Continuous Integration Component: Developer Tools Status: needs champion Type: enhancement

apache/arrow#43079 · 3 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
PyArrow segfault with empty chunked array Open

Component: Python Type: bug

apache/arrow#43085 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
`Table.to_pandas()` converts ints to doubles Open

Component: Python Type: bug

apache/arrow#43112 · 1 comment · 0 reactions · 1 assignee · Indexed Sep 14, 2026
[c++] arrow::json::TableReader::Make ignores nullable=False in explicit_schema parse_options Open

Component: C++ Type: bug

apache/arrow#43115 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[Python] Casting list elements to non-nullable doesn't check for nulls Open

Component: Python Type: bug

apache/arrow#43146 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[C++][Gandiva] InExpression for Decimal128 segfaults. Open

Component: C++ Type: bug

apache/arrow#43198 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[R] Implement anonymous functions in calls to dplyr::across Open

Component: R good-second-issue Status: needs champion Type: usage

apache/arrow#43207 · 5 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[C#] Unable to run FlightRPC client on http://localhost:5000 getting back exceptions Open

Component: C# Type: bug

apache/arrow#43223 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[Python] issue while installing streamlit in mac Open

Component: Python Type: bug

apache/arrow#43235 · 4 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[Python] Error thrown when multiplying decimal numbers Open

Component: Python Type: bug

apache/arrow#43252 · 10 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[Python] `ParquetFileFragment.subset` filter ignored when chained with `to_batches` Open

Component: Parquet Component: Python Type: bug

apache/arrow#43274 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[Python] Writing pandas.DataFrame containing a object dtype column with int values fails Open

Component: Python Type: bug

apache/arrow#43298 · 3 comments · 2 reactions · 0 assignees · Indexed Sep 14, 2026
[C++] Compiling with vcpkg dependencies is broken for latest VS 2022 (17.10) Open

Component: C++ Type: bug

apache/arrow#43327 · 3 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[Python] failures in `test_compute.py::test_round_temporal` in conda-forge for linux aarch64/ppc64le Open

Component: Packaging Component: Python Type: bug

apache/arrow#43356 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[Python] pyarrow.nulls doesn't return a valid array for non-nullable nested fields Open

Component: Python Type: bug

apache/arrow#43358 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
OSError: Flight returned unavailable error, with message: unavailable. Detail: Unavailable Open

Component: FlightRPC Component: Python Type: bug

apache/arrow#43374 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[R][CI] Link order when not using pkg-config is wrong Open

Component: Continuous Integration Component: R Type: bug

apache/arrow#43379 · 0 comments · 0 reactions · 1 assignee · Indexed Sep 14, 2026
[Python] Small max_rows_per_group causes high memory usage while iterating over each fragment's row_groups (and never released) Open

Component: Python Type: bug

apache/arrow#43387 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Mixing RLE_DICTIONARY and other column encodings in pyarrow parquet Open

Component: Parquet Component: Python Type: bug

apache/arrow#43442 · 4 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Dataset with Filename partitioning sometimes loses files on write Open

Component: C++ Type: bug

apache/arrow#43496 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[Python] Reading partial data/first block hangs on some cloud filesystems Open

Component: Python Type: bug

apache/arrow#43497 · 17 comments · 1 reaction · 0 assignees · Indexed Sep 14, 2026
[Python] Move tests that are explicitly about conversion to/from numpy on test_array.py to a separate file Open

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

apache/arrow#43510 · 6 comments · 0 reactions · 1 assignee · Indexed Sep 14, 2026
[R] Subtracting X days from a given date in ymd format Open

Component: R Status: needs champion Type: enhancement

apache/arrow#43521 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[C++] How to add support for ordering in `arrow::ArrayStatistics`? Open

Component: C++ Type: enhancement

apache/arrow#43533 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[Python] PyArrow package sets RUNPATH, making it incompatible with StaticX Open

Component: Python Type: bug

apache/arrow#43538 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[C++] Compute functions should fail gracefully when given non-CPU resident Arrays Open

Component: C++ Type: bug

apache/arrow#43541 · 0 comments · 0 reactions · 1 assignee · Indexed Sep 14, 2026
[C++][Parquet] Add support for arrow::ArrayStatistics Open

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

apache/arrow#43549 · 5 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[FlightRPC] Cannot use flight data with DataFusion (Rust) Open

Component: FlightRPC Type: bug

apache/arrow#43552 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[Python] Segfault when turning parquet dataset into table with a filter Open

Component: Parquet Component: Python Type: bug

apache/arrow#43558 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[Python][C++] Segfault reading bz2 compressed csv file with CSVStreamingReader Open

Component: Python Type: bug

apache/arrow#43604 · 15 comments · 0 reactions · 1 assignee · Indexed Sep 14, 2026
[Archery][CI] Deprecate ARCHERY_USE_DOCKER_CLI option Open

Component: Archery Component: Continuous Integration Type: enhancement

apache/arrow#43613 · 5 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[Python] FixedShapeTensorArray.to_numpy_ndarray() fails with numpy arrays of type string in Pyarrow-16, but works with v15 Open

Component: Python Type: bug

apache/arrow#43614 · 7 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[C++][Parquet] Proof-of-concept: Trying to using FlatBuffer as Parquet Footer Open

Component: C++ Component: Parquet Type: enhancement

apache/arrow#43695 · 12 comments · 0 reactions · 1 assignee · Indexed Sep 14, 2026
[C++][Python] write_dataset segfaults for reasonably large tables containing FixedSizeListArrays Open

Component: C++ Component: Python Type: bug

apache/arrow#43696 · 3 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[C++][Parquet][CI] Improve Parquet fuzzing seed corpus Open

Component: C++ Component: Continuous Integration Component: Parquet Type: enhancement

apache/arrow#43709 · 0 comments · 0 reactions · 1 assignee · Indexed Sep 14, 2026
[Python] Allow specifying endpoint_url when using utility function pyarrow.fs.resolve_s3_region Open

Component: Python Type: enhancement

apache/arrow#43713 · 2 comments · 2 reactions · 0 assignees · Indexed Sep 14, 2026
[Ruby] Segmentation Fault with require 'parquet' in ruby console Open

Component: Ruby Type: bug

apache/arrow#43714 · 11 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[C++][Acero] Add support for `ListType` for non-key fields to Hash Joins Open

Component: C++ Type: enhancement

apache/arrow#43716 · 13 comments · 6 reactions · 0 assignees · Indexed Sep 14, 2026

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