20.0.0

Issues

• GH-939: Remove reflection for gRPC buffers

  enhancement
  Unread
  apache/arrow-java#954·xborder opened Jan 11, 2026 · Updated Oct 1, 2026
  16

• GH-734: Improve CompositeJdbcConsumer error handling and add unit tests

  bug-fix
  Unread
  apache/arrow-java#778·Odin-BN opened May 30, 2025 · Updated Jan 23, 2026
  5

• GH-1020: Update vcpkg revision

  chore
  Unread
  apache/arrow-java#1023·kou opened Feb 16, 2026 · Updated Feb 17, 2026·Draft
  2

• Update vcpkg revision for Linux JNI build

  Type: enhancement
  apache/arrow-java#1020 · Filter by author kou opened on Feb 16, 2026 · 20.0.0
  

• GH-794: Avro file read and write support

  enhancement
  Unread
  apache/arrow-java#802·martin-traverse opened Jul 21, 2025 · Updated Feb 23, 2026
  8

• GH-979: Adds documentation for Flight SQL

  enhancement
  Unread
  apache/arrow-java#980·jorisgillis opened Jan 24, 2026 · Updated Mar 10, 2026
  4

• Add documentation of Flight SQL

  Type: enhancement
  apache/arrow-java#979 · Filter by author jorisgillis opened on Jan 24, 2026 · 20.0.0
  1

• Avro adapter - Read and write Avro container files

  Type: enhancement
  apache/arrow-java#794 · Filter by author martin-traverse opened on Jul 7, 2025 · 20.0.0
  5

• Support per-batch custom_metadata on RecordBatch (IPC Message field)

  Type: enhancement
  apache/arrow-java#1035 · Filter by author ennuite opened on Feb 24, 2026 · 20.0.0
  1

  

• [FlightRPC] Remove sketchy gRPC reflection code

  help wantedType: bug
  Bug

  apache/arrow-java#939 · Filter by author lidavidm opened on Dec 29, 2025 · 20.0.0
  4

  

• GH-926: Shade arrow-compression with Flight JDBC driver

  enhancement
  Unread
  apache/arrow-java#937·xborder opened Dec 24, 2025 · Updated Oct 1, 2026
  14

• JDBC driver does not support compressed IPC streams (ZSTD, LZ4) [FlightSQL]

  help wantedType: bug
  apache/arrow-java#926 · Filter by author aarshivv opened on Dec 2, 2025 · 20.0.0
  2

• GH-838: [FlightSQL][JDBC] Fix timestamp unit conversion and sub-millisecond precision in PreparedStatement parameter binding

  breaking-changebug-fix
  Unread
  apache/arrow-java#1081·dmitry-chirkov-dremio opened Mar 21, 2026 · Updated Jul 21, 2026·Draft
  11

• [JAVA] FlightSQL JDBC Driver PreparedStatement#setTimestamp() ignores connection timeStampPrecision

  Type: bug
  apache/arrow-java#838 · Filter by author psixto-denodo opened on Sep 5, 2025 · 20.0.0
  1

• GH-62: Optimize Flight SQL JDBC Statement execution paths

  enhancement
  Unread
  apache/arrow-java#1090·xborder opened Mar 24, 2026 · Updated Oct 2, 2026
  6

• GH-1134: add COLUMN_DEF support to JDBC getColumnns()

  enhancement
  Unread
  apache/arrow-java#1139·Verest opened May 6, 2026 · Updated May 11, 2026
  10

• GH-1109: Fix ComplexCopier for extension-type holder readers

  bug-fix
  Unread
  apache/arrow-java#1137·bodduv opened May 6, 2026 · Updated Aug 25, 2026
  8

• GH-1125: Read empty ListVector correctly using UnionListReader after IPC deser

  bug-fix
  Unread
  apache/arrow-java#1136·bodduv opened May 6, 2026 · Updated Aug 25, 2026
  14

• UnionListReader.setPosition throws IOOBE on a post-IPC empty List

  Type: bug
  apache/arrow-java#1125 · Filter by author bodduv opened on Apr 21, 2026 · 20.0.0

• Consume COLUMN_DEF in JDBC Flight Driver

  Type: enhancement
  apache/arrow-java#1134 · Filter by author Verest opened on May 4, 2026 · 20.0.0

• [Vector][ExtensionType] ComplexCopier requires that extension types' holder readers implement getField

  Type: bug
  apache/arrow-java#1109 · Filter by author bodduv opened on Apr 10, 2026 · 20.0.0

• [IPC][ZSTD] Compressed buffer prefix can be written as 0 while ZSTD frame has non-zero content size

  Type: bug
  apache/arrow-java#1116 · Filter by author m8928 opened on Apr 15, 2026 · 20.0.0
  1

• GH-1228: Arrow Format 1.5: Decimal32/Decimal64 support

  enhancement
  Unread
  apache/arrow-java#1227·robert3005 opened Jul 14, 2026 · Updated Sep 19, 2026
  5

• Support Format Spec 1.5 - Decimal32/64

  Type: enhancement
  apache/arrow-java#1228 · Filter by author robert3005 opened on Jul 14, 2026 · 20.0.0

• GH-1230: fix out-of-bounds write in ClobConsumer buffer growth

  bug-fix
  Unread
  apache/arrow-java#1231·Arawoof06 opened Jul 15, 2026 · Updated Aug 25, 2026
  4