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] Read GCS parquet file failed with pyarrow Open

Component: Python Type: bug

apache/arrow#44438 · 1 comment · 1 reaction · 0 assignees · Indexed Sep 14, 2026
[R] `wslify_path` breaks on windows in `create_package_with_all_dependencies` Open

Component: R Type: bug

apache/arrow#44458 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[CI][C++] Use a separated Docker image for Emscripten Open

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

apache/arrow#44471 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Memory Leak when Importing Parquet File with PyArrow Engine in Pandas Open

Component: Parquet Component: Python Type: bug

apache/arrow#44472 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[Java][FlightSQL] Inconsistent GET_PRIMARY_KEYS_SCHEMA Open

Component: Documentation Component: Format

apache/arrow#45233 · 3 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[Python][Parquet] Pyarrow seems to drop logical_type and converted_type in pyarrow.parquet.write_metadata leading to RuntimeError: AppendRowGroups requires equal schemas. error Open

Component: Parquet Component: Python Type: bug

apache/arrow#44525 · 1 comment · 1 reaction · 0 assignees · Indexed Sep 14, 2026
Misleading error message when casting Open

Component: Python Status: needs champion Type: enhancement

apache/arrow#44534 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[Format][Docs] Describe C device interface on C data interface and C stream interface docs pages Open

Component: Documentation Component: Format Status: needs champion Type: enhancement

apache/arrow#44535 · 3 comments · 2 reactions · 0 assignees · Indexed Sep 14, 2026
[Python] Enhance pyarrow.compute to Support Broadcasting Similar to numpy Open

Component: Python Type: enhancement

apache/arrow#44544 · 13 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[Dev][Archery] Use `--arrow-ref` instead of `--arrow-sha` in `archery crossbow submit` Open

Component: Archery Component: Developer Tools Status: needs champion Type: enhancement

apache/arrow#44594 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[Parquet] >2GiB Memory Leak on reading single parquet metadata file Open

Component: Parquet Component: Python Type: bug

apache/arrow#44599 · 10 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[CI][Release][Packaging][Python] wheel-manylinux-2-28-cp39-cp39-amd64 has no-op verification checks Open

Component: Continuous Integration Component: Packaging Component: Python Component: Release Type: bug

apache/arrow#44600 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[Python][C++] Calling Table.from_pandas with a dataframe that contains a map column of sufficient size causes SIGABRT and process crash Open

Component: Python Type: bug

apache/arrow#44643 · 7 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[C#] Inconsistent String Comparisons in Schema Field Retrieval Methods Open

Component: C# Type: bug

apache/arrow#44650 · 5 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[CI][Packaging][Python] Enable BuildKit for building wheel on Windows Open

Component: Continuous Integration Component: Packaging Component: Python Status: needs champion Type: enhancement

apache/arrow#44671 · 1 comment · 0 reactions · 1 assignee · Indexed Sep 14, 2026
[R] Add Cumsum and duplicated bindings to datasets in R Open

Component: R Status: needs champion Type: enhancement

apache/arrow#44673 · 6 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[Python] Efficient way to iterate over groups Open

Component: Python Status: needs champion Type: enhancement

apache/arrow#44676 · 3 comments · 3 reactions · 0 assignees · Indexed Sep 14, 2026
[C++][Python] Potential improvements around supply chain security Open

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

apache/arrow#44688 · 7 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[Python][C++] `ArrowKeyError: Attempted to register factory for scheme 'file'` when using pip-installed GDAL Open

Component: C++ Component: Python Type: bug

apache/arrow#44696 · 12 comments · 4 reactions · 0 assignees · Indexed Sep 14, 2026
Behavior of decimal array construction with numpy int64 arrays fails, but a list of ints works Open

Component: Python Type: bug

apache/arrow#44712 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[R] filtering a dataset down to a single partition (dplyr interface) prior to collection still accesses other partitions, leading to slow reads Open

Component: R Type: bug

apache/arrow#44725 · 3 comments · 1 reaction · 0 assignees · Indexed Sep 14, 2026
[Python] Creating a table from a sliced struct array drops the slice Open

Component: Python Type: bug

apache/arrow#44731 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[CI][Python] Investigate trusted publishing for uploading wheels to PyPI Open

Component: Continuous Integration Component: Packaging Component: Python Type: enhancement

apache/arrow#44733 · 16 comments · 1 reaction · 0 assignees · Indexed Sep 14, 2026
[R] Provide helpful hints for NotImplemented kernel errors Open

Component: R Status: needs champion Type: enhancement

apache/arrow#44740 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[Docs][Python] Uncertainty with ParquetFile.schema vs ParquetFile.schema_arrow Open

Component: Documentation Component: Python Type: bug

apache/arrow#44741 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[CI][Dev] Apply ShellCheck lint to all shell scripts Open

Component: Continuous Integration Component: Developer Tools Type: enhancement

apache/arrow#44748 · 4 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[Python] OOM with Dataset.scanner but ok with ParquetFile.iter_batches Open

Component: Python Type: bug

apache/arrow#44799 · 4 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[Python] Jobs fail if Pyarrow version is not correctly generated due to missing remote dev tags Open

Component: Python Type: bug

apache/arrow#44803 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[C++] Better handling `mem*` api that behave sanely on NULL input Open

apache/arrow#44814 · 3 comments · 1 reaction · 0 assignees · Indexed Sep 14, 2026
[R] Installing arrow R package on Linux with install-arrow.R fails Open

Component: R Type: bug

apache/arrow#44824 · 6 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[C++][Python] Protobuf error building Arrow on macOS Open

Component: C++ Component: Python Type: bug

apache/arrow#44868 · 16 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[C++] Issues compiling with gcc-14 Open

Component: C++ Type: bug

apache/arrow#44877 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[Docs] Clean up LICENSE and NOTICE files Open

Component: Documentation Status: needs champion Type: enhancement

apache/arrow#44879 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[Python][C++] Casting nested list array with null structs results in invalid array Open

Component: Python Type: bug

apache/arrow#44881 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[Dev][Release] post-10-docs.sh doesn't work correctly for patch releases Open

Component: Developer Tools Component: Release Type: bug

apache/arrow#44887 · 4 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[C++][Parquet] Loading big parquet files leads to huge memory consumption Open

Component: C++ Type: bug

apache/arrow#44890 · 6 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[Python][FlightRPC] Some flight classes not exported as public Open

Component: FlightRPC Component: Python Type: bug

apache/arrow#44909 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[C++][Parquet] Reading from parquet file very slow due to unnecessary memcpy Open

Component: C++ Component: Parquet Type: enhancement

apache/arrow#44917 · 3 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[Python][Parquet] reading parquet file saved with lz4 codec throws zstd error Open

Component: Parquet Component: Python Type: bug

apache/arrow#44942 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[Python] read_json error message not clear when duplicate field in schema Open

Component: Python Type: bug

apache/arrow#44949 · 9 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[CI][Python] test_arrow_cogrouped_map and test_arrow_grouped_map from pyspark fail on integration job Open

Component: Continuous Integration Component: Python Type: bug

apache/arrow#44986 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[C++] Fix new warnings when building with GCC 15 Open

Component: C++ Type: bug

apache/arrow#44995 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[pyarrow] `pyarrow.compute.unique` gives garbage results with chunked dictionary arrays. Open

Component: Python Type: bug

apache/arrow#45010 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Is there a max limit to PyArrow write_dataset row-group sizes Open

Component: Parquet Component: Python Type: usage

apache/arrow#45018 · 1 comment · 1 reaction · 0 assignees · Indexed Sep 14, 2026
[C++] ENH: enable building against system opentelemetry on windows Open

Component: C++ Component: Packaging Type: enhancement

apache/arrow#45033 · 3 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[C++] write_dataset: max_open_files does not close least recently used file Open

Component: C++ Component: Python Type: bug

apache/arrow#45038 · 11 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[Python] write_to_dataset, coerce_timestamps issue with stored binary schema Open

Component: Python Type: bug

apache/arrow#45062 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[Python] Windows 10 Access Violation exit(5) application crashes when mysql-connector-python==9.1.0 is used and pyarrow installed Open

Component: Python Type: bug

apache/arrow#45065 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[R] [parquet] Cannot load chunked large_list<dict> from parquet file Open

Component: Parquet Component: R Type: bug

apache/arrow#45087 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
StreamReader not supporting Date values Open

Component: C++ Type: bug

apache/arrow#45090 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026

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