Issues

• GH-51198: [R] ALTREP crash in base R due to use-after-free

  awaiting change reviewComponent: R
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  apache/arrow#51288·thisisnic opened Sep 10, 2026 · Updated Sep 10, 2026
  14

• GH-51215: [C++] Migrate remaining datetime consumers to the chrono shim

  awaiting change reviewCI: Extra: C++Component: C++Component: GandivaComponent: PythonComponent: R
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  apache/arrow#51216·rok opened Sep 7, 2026 · Updated Sep 30, 2026
  88

• GH-51114: [FlightSQL][C++] Expose is_update field of PreparedStatement

  awaiting change reviewComponent: C++Component: FlightRPC
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  apache/arrow#51133·ShivanshhhG opened Sep 2, 2026 · Updated Sep 26, 2026
  21

• GH-51037: [C++] Replace RapidJSON with simdjson in JSON parser

  awaiting change reviewCI: Extra: C++Component: C++Component: Python
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  apache/arrow#51038·Reranko05 opened Aug 29, 2026 · Updated Oct 6, 2026
  162

• GH-50906: [Python] Reshape 1D tensors to 2D in SparseCSR/CSC matrix conversion

  awaiting change reviewComponent: Python
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  apache/arrow#50907·pratyushadk opened Aug 18, 2026 · Updated Aug 25, 2026
  36

• GH-50634: [C++][Engine] Fix Substrait consumer silently dropping modern FetchRel/AggregateRel fields

  awaiting change reviewComponent: C++
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  apache/arrow#50635·fangchenli opened Jul 25, 2026 · Updated Oct 5, 2026
  10

• GH-50829 [Python] Use more CPython Limited APIs in python/pyarrow

  awaiting change reviewComponent: Python
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  apache/arrow#50409·mroeschke opened Jul 7, 2026 · Updated Sep 17, 2026
  62

• GH-50282: [C++][FlightRPC] Refactor GRPC server and transport classes

  awaiting change reviewCI: Extra: C++CI: Extra: Package: LinuxCI: Extra: RComponent: C++Component: FlightRPC
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  apache/arrow#50407·Alex-PLACET opened Jul 7, 2026 · Updated Sep 18, 2026
  21

• GH-50665: [Python] Assert s3fs selector result count

  awaiting change reviewComponent: Python
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  apache/arrow#50389·anxkhn opened Jul 6, 2026 · Updated Jul 27, 2026·Draft
  5

• GH-50027: [Format][C++][Python] Add fixed and variable closedness range canonical extension types

  awaiting change reviewComponent: C++Component: DocumentationComponent: Python
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  apache/arrow#50028·Hoeze opened May 24, 2026 · Updated Oct 4, 2026
  18

• GH-49995: [R][Wasm] Fix threading issue under Wasm/Emscripten

  awaiting change reviewComponent: C++Component: R
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  apache/arrow#49996·amoeba opened May 19, 2026 · Updated Jul 3, 2026·Draft
  68

• GH-49817: [C++] Reject decimal strings that exceed the target precision

  awaiting change reviewComponent: C++
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  apache/arrow#49832·SAY-5 opened Apr 21, 2026 · Updated Aug 16, 2026
  18

• GH-41017: [C++] Preserve ordered flag in DictionaryBuilder

  awaiting change reviewComponent: C++
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  apache/arrow#49797·tinezivic opened Apr 19, 2026 · Updated Apr 27, 2026
  6

• GH-33823: [C++][IPC] Improve error messages when opening files that are the wrong format

  awaiting change reviewComponent: C++
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  apache/arrow#49771·RobertLD opened Apr 16, 2026 · Updated Jun 16, 2026
  28

• GH-45523: [R] Implement Utf8View type bindings

  awaiting change reviewComponent: C++Component: PythonComponent: R
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  apache/arrow#49712·thisisnic opened Apr 11, 2026 · Updated Sep 4, 2026·Draft
  53

• GH-41365: [Python] Fix S3 URI with whitespace silently falling back to LocalFileSystem

  awaiting change reviewComponent: C++Component: Python
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  apache/arrow#49372·ernestprovo23 opened Feb 22, 2026 · Updated Aug 25, 2026
  16

• GH-37937: [C++][FlightRPC] Investigate using gRPC's generic API using gRPC's BidiReactor

  awaiting change reviewComponent: C++Component: FlightRPC
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  apache/arrow#49339·raulcd opened Feb 19, 2026 · Updated Mar 13, 2026·Draft
  8

• GH-49258: [C++][Python] Add public APIs for reading and serializing IPC dictionary messages

  awaiting change reviewComponent: C++Component: DocumentationComponent: Python
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  apache/arrow#49262·rustyconover opened Feb 12, 2026 · Updated Feb 14, 2026
  10

• GH-49057: [Python][Packaging] Remove test base docker image and use single windows base image for both build and test containers

  awaiting change review
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  apache/arrow#48996·raulcd opened Jan 26, 2026 · Updated Feb 3, 2026
  36

• GH-47195: [Python][CI] Add support for building PyArrow library on Windows ARM64

  awaiting change review
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  apache/arrow#48539·MugundanMCW opened Dec 15, 2025 · Updated Sep 28, 2026
  112

• GH-36593: [Python] Add rename_columns method to pyarrow datasets

  awaiting change reviewComponent: Python
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  apache/arrow#48289·JonatanMartens opened Nov 29, 2025 · Updated Jan 7, 2026
  7

• GH-48216: [C++][Parquet] Fix Util Byte Stream Split Internal logic to enable Parquet DB support on s390x

  awaiting change reviewComponent: C++
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  apache/arrow#48217·Vishwanatha-HD opened Nov 21, 2025 · Updated Jun 17, 2026
  15

• GH-48206: [C++][Parquet] Fix statistics logic on s390x

  awaiting change reviewComponent: C++Component: Parquet
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  apache/arrow#48207·Vishwanatha-HD opened Nov 21, 2025 · Updated Jun 17, 2026
  22

• GH-48204: [C++][Parquet] Fix Column Reader & Writer logic to enable Parquet DB support on s390x

  awaiting change reviewComponent: C++Component: Parquet
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  apache/arrow#48205·Vishwanatha-HD opened Nov 21, 2025 · Updated Jun 15, 2026
  46

• GH-48177: [C++][Parquet] Fix arrow-acero-asof-join-node-test failures on s390x

  awaiting change reviewComponent: C++
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  apache/arrow#48180·Vishwanatha-HD opened Nov 19, 2025 · Updated Jun 30, 2026
  54