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++][Docs] Create tutorial content for basic Flight usage Open

Component: C++ Component: Documentation Type: task

apache/arrow#32650 · 2 comments · 0 reactions · 1 assignee · Indexed Sep 14, 2026
[C++][Docs] Create tutorial content for Acero Open

Component: C++ Component: Documentation Type: task

apache/arrow#32651 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[Python] pyarrow large integer conversion Open

Type: bug

apache/arrow#32664 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[C++][Dataset] Allow creating FileSystemDataset with FileInfoGenerator as a source Open

Type: task

apache/arrow#32667 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
pyarrow may use a lot of memory to load a dataframe from parquet Open

Component: Parquet Component: Python Type: bug

apache/arrow#32670 · 10 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[Gandiva] How to support overflow check and throw an exception in LLVM? Open

apache/arrow#13870 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
C++20 compile arrow get `operator==` ambiguous Open

Component: C++ Type: bug

apache/arrow#32677 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[R] Microsecond is not sufficient unit for POSIXct Open

Component: R Type: enhancement

apache/arrow#32693 · 4 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Hi there, Which git commit of flatbuffer is used in arrow? will it change often? Open

apache/arrow#13891 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[R][C++] Scalar UDFs don't actually deal with scalars Open

Component: C++ Component: R Type: bug

apache/arrow#32704 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[Docs] Clarify processes for first-time contributors Open

Component: C++ Component: Documentation Component: Go Component: Python Component: R Type: task

apache/arrow#32712 · 3 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Failure to parse files that can be parsed on pyarrow. Also, failure to recover from crash Open

Type: bug

apache/arrow#32732 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[C++] Substrait to Arrow Aggregate doesn't take the provided Output Type for aggregates Open

Component: C++ Type: bug

apache/arrow#20376 · 6 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[C++][Flight] Segmentation fault on arrow-flight-integration-test on nightly failure Open

Component: C++ Component: FlightRPC Type: bug

apache/arrow#32754 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[C++] Adding Fetch Node ToProto Open

Type: task

apache/arrow#32764 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[java] reading multiple parquet files takes unresonable amount of memory Open

apache/arrow#13949 · 4 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[Python][C++] pyarrow parquet writer - missing time logical type Open

Component: C++ Component: Parquet Component: Python Type: bug

apache/arrow#32766 · 5 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[C++][Parquet] Skip method skips levels and not rows for repeated fields Open

Component: C++ Component: Parquet Priority: Major Type: bug

apache/arrow#42995 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Java encode int64 using delta and use golang to decode Open

apache/arrow#13961 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[C++] Pretty Printing for RLE arrays Open

Type: task

apache/arrow#20380 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Substrait SetRel Open

apache/arrow#13967 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Sys.setenv(ARROW_WITH_ZSTD = "ON") not working for install.packages("arrow") Open

Type: bug

apache/arrow#32780 · 0 comments · 1 reaction · 0 assignees · Indexed Sep 14, 2026
Expose min_value/max_value when min/max for row group is empty Open

apache/arrow#13976 · 3 comments · 1 reaction · 0 assignees · Indexed Sep 14, 2026
[Go] add method on Array interface Open

apache/arrow#13977 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
What is the correct way to use IPC if you implement your own IO layer? Open

apache/arrow#13978 · 4 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[Python] List<Extension> arrays aren't supported in to_pandas calls Open

Component: C++ Component: Python Type: bug

apache/arrow#32791 · 5 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[C++][Java] Arrow Flight C++/Java performance comparison Open

apache/arrow#13980 · 20 comments · 1 reaction · 0 assignees · Indexed Sep 14, 2026
[Python] Can not refer to field in a list of structs Open

Component: Python Type: bug

apache/arrow#32794 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[R] Substantial RAM use increase in 9.0.0 release on write_dataset() Open

Component: R Priority: Critical Type: bug

apache/arrow#32795 · 12 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
How to retrieve server logs and query progress in Flight SQL Open

apache/arrow#13988 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[C++] Adopt C++17 idioms and features for maintainability Open

Component: C++ Type: task

apache/arrow#32800 · 6 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[C++][FlightRPC] Inconsistent use of int, int32_t, uint32_t for SqlInfo enum values Open

Component: C++ Component: FlightRPC Type: bug

apache/arrow#20388 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Undefined Reference to arrow::ImportRecordBatchReader Open

apache/arrow#14020 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[C++] Try and maintain input shape in Acero Open

Component: C++ Type: bug

apache/arrow#32841 · 4 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[R][C++] Why is read_csv_arrow so much slower when using S3 path notation? Open

Component: C++ Component: R Priority: Critical Type: bug

apache/arrow#32844 · 8 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[C++] ReadRangeCache should not retain data after read Open

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

apache/arrow#32846 · 11 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[C++] Error when creating Expression on Decimal128 types: precision out of range Open

Component: C++ Type: bug

apache/arrow#32848 · 11 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[R] Allow all cast options to be specified Open

Component: R good-first-issue Type: enhancement

apache/arrow#20395 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[C++] Cast float to decimal truncates Open

Component: C++ Type: bug

apache/arrow#32852 · 7 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[C++][Acero] Window Functions add helper classes for ranking Open

Component: C++ Type: enhancement

apache/arrow#32867 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Cast error on roundtrip of categorical column to parquet and back Open

Component: Parquet Component: Python Type: bug

apache/arrow#32869 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[Python] discrepancy of of schema and schema.metadata if second same-name key is byte-encoded Open

Component: Python Type: bug

apache/arrow#32870 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
How to read parquet file with Arrow on m1 macs Open

apache/arrow#14051 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[Python] Converting Table to pandas raises NotImplementedError (when table previously saved as partitioned parquet dataset) Open

Component: Python Type: bug

apache/arrow#20400 · 5 comments · 0 reactions · 1 assignee · Indexed Sep 14, 2026
[C++] AsofJoinNode 128-bit hashing Open

Component: C++ Type: enhancement

apache/arrow#32894 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[R] Add link to cookbook from README (getting started vignette) Open

Component: R Type: enhancement

apache/arrow#32895 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[Website] Add Zulip details to the Communication page Open

Component: Website Type: enhancement

apache/arrow#32903 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
slow performance when reading data from GCP Open

Component: Parquet Component: Python Type: bug

apache/arrow#32919 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Parquet write_table killed when run from script Open

apache/arrow#14094 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
s3 client retry strategy invalid？ Open

apache/arrow#14107 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026

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