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 13h
Merged PRs (30d): 88

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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2160 open issues indexed

[C++][Compute] Add fixed_size_binary support to more compute functions Open

Component: C++ Type: bug

apache/arrow#29902 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[Ruby] Add DSL to build expression Open

Component: Ruby Type: enhancement

apache/arrow#29928 · 3 comments · 0 reactions · 1 assignee · Indexed Sep 14, 2026
[Python] Allow parquet::WriterProperties::created_by to be set via pyarrow.ParquetWriter for compatibility with older parquet-mr Open

Component: Python Type: bug

apache/arrow#29986 · 16 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[C++] Configure row group size in dataset writting Open

Component: C++ Type: bug

apache/arrow#29991 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[C++] Potential stack overflow in async scanner Open

Component: C++ Type: bug

apache/arrow#30037 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[C++][Parquet] Writing DictionaryArrays with ExtensionType to Parquet Open

Component: Python Type: bug

apache/arrow#30080 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[R] Add option to attempt 32-bit integer type inference in CSV reader Open

Component: R Type: task

apache/arrow#30083 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Error compiling cython file when installing pyarrow Open

apache/arrow#11581 · 7 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[Docs] [Benchmarking] Add conbench to the benchmarking docs Open

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

apache/arrow#30125 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[Python] parquet.read_table nested fields in columns does not work for use_legacy_dataset=False Open

Component: Python Priority: Critical Type: bug

apache/arrow#30143 · 4 comments · 0 reactions · 1 assignee · Indexed Sep 14, 2026
[Ruby] Add API to read/write by partitions Open

Component: Ruby Type: enhancement

apache/arrow#30150 · 3 comments · 0 reactions · 1 assignee · Indexed Sep 14, 2026
[C++][Dataset] Devise a mechanism to limit the total "system ram" (process + cache) used by dataset writes Open

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

apache/arrow#30179 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[C++][Dataset] Change scanner readahead limits to be based on bytes instead of number of batches Open

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

apache/arrow#30191 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
read_feather error with 32 GB file Open

apache/arrow#11665 · 14 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[C++] unify_schemas can't handle int64 + double, affects CSV dataset Open

Component: C++ Component: Python Component: R Type: bug

apache/arrow#30245 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[C++][CI] CountingSemaphore sporadic test crash Open

Component: C++ Component: Continuous Integration Type: bug

apache/arrow#30272 · 4 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[C++][R]Opening a multi-file dataset and writing a re-partitioned version of it fails Open

Component: C++ Component: R Priority: Critical Status: needs champion Type: bug

apache/arrow#18944 · 11 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[C++][Python] The ORC writer does not support all-null object columns from Pandas Open

Component: C++ Component: Python Type: bug

apache/arrow#30317 · 3 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[Python] read an HDFS file by line failed when the open_mode is "rb" Open

Component: Python Type: bug

apache/arrow#30322 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[C++] FindArrowDataset requires Parquet Open

Component: C++ Component: Developer Tools Type: bug

apache/arrow#30328 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[C++] Adding tabular pretty printing of Table / RecordBatch Open

Component: C++ Type: enhancement

apache/arrow#30334 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[R] Implement bindings for stringr's combining strings functions Open

Component: R Status: needs champion Type: enhancement

apache/arrow#30367 · 3 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[C++] Fix issue with valgrind unrecognized instruction Open

Component: C++ Type: bug

apache/arrow#30368 · 14 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[C++][Dataset] Add support for filter pushdown in the ORC Scanner Open

Component: C++ good-second-issue Type: task

apache/arrow#30415 · 8 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[C++] Enable CSV Writer to append / overwrite existing file Open

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

apache/arrow#30429 · 8 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[C++] Enable CSV Writer to control the type of escape used for quoting Open

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

apache/arrow#30431 · 5 comments · 0 reactions · 1 assignee · Indexed Sep 14, 2026
[Python] Reading Hive-style partitioned parquet files from GCS Open

Component: Python Type: bug

apache/arrow#30481 · 7 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[C++][Compute] Replace ExecNode::InputReceived with ::MakeTask (Part 2) Open

Component: C++ Type: task

apache/arrow#30492 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[C++] Crash when build arrow::Array using arrow::ArrayBuilder Open

Component: C++ Type: bug

apache/arrow#30504 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
PyArrow SIGSEGV error when using UnionDatasets Open

Component: Python Type: bug

apache/arrow#30562 · 4 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[R] open_dataset() on csv files lacks support for compressed files Open

Component: R Type: bug

apache/arrow#30575 · 9 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[C++][Tools] Create visualization tool for exec plan tracing logs Open

Component: C++ Type: task

apache/arrow#30578 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[C++] Intermittent failure in arrow-dataset-file-ipc-test Open

Component: C++ Type: bug

apache/arrow#30582 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[R][C++] Arrow crashes (OOM) on R client with large remote parquet files Open

Component: R Type: bug

apache/arrow#30594 · 21 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[Python] Python install pyarrow failed on Linux ppc64le Open

Component: Python installation Type: bug

apache/arrow#18997 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[Python] Cannot mix struct and non-struct, non-null values error when saving nested types with PyArrow Open

Component: Python Type: bug

apache/arrow#30648 · 5 comments · 4 reactions · 0 assignees · Indexed Sep 14, 2026
[C++][Parquet] ArrowInvalid: Integer value emitted when reading parquet dataset Open

Component: C++ Type: bug

apache/arrow#30652 · 3 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[Python] pyarrow.compute functions don't convert args with __arrow_array__. Open

Component: Python Type: enhancement

apache/arrow#30711 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[C++] Occasional failure arrow-compute-hash-join-node-test Open

Component: C++ Type: bug

apache/arrow#20052 · 3 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[Python] Convert array of Pandas dataframe to struct column Open

Component: Python Type: enhancement

apache/arrow#20057 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[C++] Temporal floor/ceil/round handle ambiguous/nonexistent local time Open

Component: C++ Type: enhancement

apache/arrow#30746 · 3 comments · 0 reactions · 1 assignee · Indexed Sep 14, 2026
[C++] Simplify creating a scan node Open

Component: C++ Type: task

apache/arrow#30755 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[C++] Add ExecNode to arrow/compute/api.h Open

Component: C++ Type: task

apache/arrow#30757 · 3 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[C++][JNI] DisposableScannerAdaptor does not handle arrays with offsets Open

Component: C++ Type: bug

apache/arrow#30767 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[C++] Name the threads in thread pools Open

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

apache/arrow#30775 · 5 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[C++] write_dataset with delete_matching occasionally fails with "Path does not exist" Open

Component: C++ Type: bug

apache/arrow#30776 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Build just doesn't work on windows with MSVC 2017. Any chance to put together decent .vcproj files? Open

apache/arrow#12114 · 5 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[C++] Linking error for debug build on Windows Open

Component: C++ Type: bug

apache/arrow#30788 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[R] Error when reading parquet file using FileSystem object Open

apache/arrow#12118 · 5 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[Python][Docs] Opening a partitioned dataset with schema and filter Open

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

apache/arrow#30800 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026

apache/arrow

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