Issues

• [C++][Release] verify-rc-source-windows fails with latest simdjson (5.0.1) from conda

  Component: C++Component: ReleaseType: bug
  apache/arrow#51690 · Filter by author raulcd opened on Oct 2, 2026 · 26.0.0
  2

• [C++][Parquet] Content-defined chunking resets its state at every row group

  Component: C++Component: ParquetType: bug
  apache/arrow#51684 · Filter by author kszucs opened on Oct 2, 2026
  

• [Python] Provide more informative error message for certain numpy -> arrow conversions

  Component: Python
  apache/arrow#51678 · Filter by author jorisvandenbossche opened on Oct 1, 2026

• [Python][Parquet] Errno 14 Error reading bytes from file with pyarrow.parquet.ParquetFile(), but consistently succeeds on second try

  Component: PythonType: bug
  apache/arrow#51674 · Filter by author zianliu66-me opened on Oct 1, 2026
  8

• [C++][Parquet] Error when printing file metadata

  Component: C++Component: ParquetType: bug
  apache/arrow#51673 · Filter by author pitrou opened on Oct 1, 2026
  2

  

• [C++][Dev] Fix shellcheck errors in the cpp/examples/minimal_build directory

  Component: Developer ToolsType: enhancement
  apache/arrow#51670 · Filter by author hiroyuki-sato opened on Oct 1, 2026
  

• [C++][Parquet] Plaintext-footer files written with AES_GCM_CTR_V1 record AES_GCM_V1 as the encryption algorithm and cannot be read

  Type: bug
  apache/arrow#51669 · Filter by author dotnwat opened on Oct 1, 2026

• [R] Datasets umbrella ticket

  Component: RType: enhancement
  apache/arrow#51667 · Filter by author thisisnic opened on Sep 30, 2026
  

• [C++][Gandiva] Race condition with Gandiva expressions

  Component: C++Component: GandivaType: bug
  apache/arrow#51663 · Filter by author lriggs opened on Sep 30, 2026
  

• [R] Expose ignore_extra_columns and pad_short_rows CSV parse options

  Component: Rgood-first-issueType: enhancement
  apache/arrow#51659 · Filter by author thisisnic opened on Sep 30, 2026

• [R] CRAN packaging checklist for version 26.0.0

  Component: R
  apache/arrow#51654 · Filter by author thisisnic opened on Sep 30, 2026
  

• [C++][Parquet] Encoding fuzzer should tell fuzzing engine about invalid parameters

  Component: C++Component: ParquetType: enhancement
  apache/arrow#51649 · Filter by author pitrou opened on Sep 30, 2026
  

• [C++][Parquet] int32 offset overflow in dictionary SetDict causes heap out-of-bounds write

  Component: C++Component: Parquet
  apache/arrow#51641 · Filter by author Arawoof06 opened on Sep 29, 2026
  

• [Python] Casting a struct with a null-typed field to its own type gives an invalid array

  Component: PythonType: bug
  apache/arrow#51639 · Filter by author lmmx opened on Sep 29, 2026
  1

  

• [Python] Directly constructed FunctionOptions segfaults in serialize()

  Component: PythonType: bug
  apache/arrow#51628 · Filter by author marinelay opened on Sep 29, 2026
  5

  

• [C++][Parquet] Wrong statistics for dictionary-encoded string columns: nulls under a null struct are not counted, unused dictionary values end up in min/max

  Component: C++Component: Parquet
  apache/arrow#51626 · Filter by author kita-renji opened on Sep 29, 2026
  

• [C++][FlightRPC][ODBC] Universal macOS installer

  Component: C++Component: FlightRPCType: enhancement
  apache/arrow#51614 · Filter by author alinaliBQ opened on Sep 28, 2026
  

• [C++] ListArray::FromListView gives wrong nulls for sliced list-view arrays

  Component: C++
  apache/arrow#51613 · Filter by author jonasdedden opened on Sep 28, 2026

• [Python][C++] Casting list_view to list ignores the view sizes and gives wrong results

  Component: C++Component: Python
  apache/arrow#51612 · Filter by author jonasdedden opened on Sep 28, 2026
  1

  

• [GLib][Ruby] Split the S3 bindings to arrow-s3-glib

  Component: GLibType: enhancement
  apache/arrow#51608 · Filter by author kou opened on Sep 28, 2026
  3

• [C++] Add type_id to arrow::ArrayBuilder

  Component: C++Type: enhancement
  apache/arrow#51566 · Filter by author andishgar opened on Sep 27, 2026
  1

  

• [Python] DataFrame interchange silently corrupts non-native-endian columns.

  Component: PythonType: bug
  apache/arrow#51548 · Filter by author tam3tamtam opened on Sep 27, 2026
  1

  

• [C++][R] Deadlock in IPC dataset scan with a small IO thread pool: synchronous reader re-open inside MergedGenerator lock

  Component: C++Component: RType: bug
  apache/arrow#51547 · Filter by author liorso opened on Sep 27, 2026

• [Python] pyarrow.compute.strftime silently echoes unsupported format specifiers (%s returns the literal '%s')

  Component: Python
  apache/arrow#51499 · Filter by author ptimizeroracle opened on Sep 26, 2026
  1

• [Python][C++][Dataset][Parquet] Row-group statistics drop NaN rows for != and negated comparisons on float columns

  Component: C++Component: ParquetComponent: Python
  apache/arrow#51491 · Filter by author singhpratech opened on Sep 25, 2026
  1