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 18h
Merged PRs (30d): 91

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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2158 open issues indexed

[Python] Parquet write_to_dataset leads to partial write when unsupported datatype is passed in table Open

Component: Python Type: bug

apache/arrow#30859 · 3 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[C++][Gandiva] Deal with functions that have lock contention Open

Component: Gandiva Type: bug

apache/arrow#30874 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[C++][Python] Slicing a table with no columns returns a table with incorrect length. Open

Component: C++ Component: Python good-first-issue Priority: Medium Status: needs champion Type: bug

apache/arrow#30894 · 3 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[C++][Datasets] Investigate sub-batch IPC reads Open

Component: C++ Type: task

apache/arrow#30895 · 3 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
NotImplemented: serializing ExampleFunctionOptionsType to StructScalar Open

Component: C++ Type: bug

apache/arrow#30923 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[C++/Python] pyarrow build incorrectly detects x86 as system process during cross-cimpile Open

Component: C++ Component: Python Type: bug

apache/arrow#30925 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[R] Arrow/Parquet can't open encrypted parquet files Open

Component: R Status: needs champion Type: enhancement

apache/arrow#30936 · 4 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[C++] Unable to build Arrow C++ on osx arm64 inside conda env because of Invalid configuration `arm64-apple-darwin20.0.0': machine `arm64-apple' not recognized and arrow/cpp/arm64-apple-darwin20.0.0-ar: No such file or directory Open

Component: C++ Type: bug

apache/arrow#30937 · 19 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[Python] Unable to build pyarrow wheels with manylinux2014 for ppc64le arch Open

Component: Python installation Type: bug

apache/arrow#30945 · 3 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[C++] Creating (or casting to) list array with non-nullable field doesn't check nulls Open

Component: C++ Type: enhancement

apache/arrow#30954 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[C++] Investigate batching filter node output Open

Component: C++ Type: task

apache/arrow#30994 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[C++] Investigate reporting filter selectivity for filter order optimization Open

Component: C++ Type: task

apache/arrow#30995 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[C++][R][Python] Update ExecPlan bindings Open

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

apache/arrow#31000 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[C++] Add rows scanned to open telemetry / profiling Open

Component: C++ Type: task

apache/arrow#31001 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[Doc] Improve documentation on usage of Schema metadata and usage/limitations in Execplan Open

Component: C++ Type: task

apache/arrow#20098 · 4 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[C++][Compute] Crash of out-of-bounds memory accessing in KeyCompare::NullUpdateColumnToRowImp_avx2 of hash_aggregate Open

Component: C++ Type: bug

apache/arrow#31059 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[C++][Python] Metadata from C data interface is not valid utf8 Open

Component: C++ Component: Python Type: bug

apache/arrow#20107 · 5 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[C++] STL allocator doesn't check for multiplication overflow Open

Component: C++ Type: bug

apache/arrow#31076 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[C++][Python] UDF Integration Open

Component: C++ Component: Python Type: task

apache/arrow#31094 · 5 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
PoC for UDFs Open

Type: task

apache/arrow#31095 · 3 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[C++][Python] UDF Optimizations Open

Type: task

apache/arrow#31096 · 4 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[Docs] UDF Documentation Open

Component: Documentation Type: task

apache/arrow#31097 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[Docs] UDFs on Cookbook Open

Component: Documentation Type: task

apache/arrow#31098 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[C++][Python] UDF Aggregate Function Implementation Open

Type: task

apache/arrow#31099 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[C++][Python] UDF Vector Function Implementation Open

Type: task

apache/arrow#31103 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[C++] CMake warnings with Flight SQL Open

Component: C++ Type: bug

apache/arrow#31104 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[C++] Parquet pushdown filtering fails if the filter expression uses numeric field references Open

Component: C++ Type: bug

apache/arrow#20114 · 6 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[C++][Python][R] Add format inference option to StrptimeOptions Open

Component: C++ Component: Python Component: R Type: enhancement

apache/arrow#31120 · 5 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[Archery][Integration] Parameterize integration tests by language Open

Component: Developer Tools Component: Integration Type: test

apache/arrow#31122 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[C++][Parquet] Extension types with nanosecond timestamp resolution don't roundtrip Open

Component: C++ Component: Parquet Type: bug

apache/arrow#31163 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[Python] Legacy dataset can't roundtrip Int64 with nulls if partitioned Open

Component: Python Type: bug

apache/arrow#31175 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[Python] Parquet read table fail with small groups with Pyarrow 7.0.0 Open

apache/arrow#12470 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
pyarrow.parquet.read_table("parquet_file") causes bus error in ipython Open

Component: Python Type: bug

apache/arrow#31185 · 4 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[C++] Unable to use a FIFO as a OSFile path. Open

Component: C++ Component: Python Type: bug

apache/arrow#31186 · 3 comments · 1 reaction · 0 assignees · Indexed Sep 14, 2026
[C++][FlightRPC] Optionally cache serialized ListFlights serverside Open

Component: C++ Component: FlightRPC Type: enhancement

apache/arrow#31208 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[Python] Arrow Table with DenseUnion fails to convert to Python Pandas DataFrame Open

Component: Python Type: bug

apache/arrow#31211 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[CI][C++] Reinstate a code coverage job Open

Component: C++ Component: Continuous Integration Type: task

apache/arrow#31212 · 6 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[C++] [CMake] Missing hiveserver2 ErrorCodes_types Open

Component: C++ Type: bug

apache/arrow#31217 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[C++] Temporal floor/ceil/round kernels could be optimised with templating Open

Component: C++ Type: enhancement

apache/arrow#31229 · 3 comments · 0 reactions · 1 assignee · Indexed Sep 14, 2026
[R][C++] Discussion: Plans for date casting from int to support an origin option? Open

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

apache/arrow#31240 · 11 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[R] Empty JSON object parsed as corrupt data frame Open

Component: R Status: needs champion Type: bug

apache/arrow#31244 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[R] Update as.Date() to support direct casting from double/float Open

Component: R Type: task

apache/arrow#31248 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[R] [C++] Should strptime support a partial format? Open

Component: C++ Component: R Type: enhancement

apache/arrow#31254 · 16 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[R] passing a schema calls open_dataset to fail on hive-partitioned csv files Open

Component: R Type: task

apache/arrow#31312 · 5 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[C++] Can't open partitioned dataset if the root directory has "=" in its name Open

Component: C++ Type: bug

apache/arrow#20145 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[C++] Support for fractional seconds in strptime() Open

Component: C++ Type: enhancement

apache/arrow#20146 · 8 comments · 3 reactions · 1 assignee · Indexed Sep 14, 2026
[C++][Docs] Document that the strptime kernel ignores %Z Open

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

apache/arrow#31315 · 8 comments · 0 reactions · 1 assignee · Indexed Sep 14, 2026
[C++] Strptime issues umbrella Open

Component: C++ Type: enhancement

apache/arrow#31324 · 3 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[C++] Linker error when building Flight tests Open

Component: C++ Component: FlightRPC Type: bug

apache/arrow#31327 · 18 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[C++] Support rolling backwards and forwards with temporal arithmetic Open

Component: C++ Type: task

apache/arrow#31334 · 6 comments · 0 reactions · 1 assignee · Indexed Sep 14, 2026

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