20.0.0

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GH-939: Remove reflection for gRPC buffers

enhancementPRs that add or improve features.PRs that add or improve features.

Status: Open (in progress).

apache/arrow-javanumber 954

#954 In apache/arrow-java;

· xborder opened on Jan 11, 2026

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

bug-fixPRs that fix a big.PRs that fix a big.

Status: Open (in progress).

apache/arrow-javanumber 778

#778 In apache/arrow-java;

· Odin-BN opened on May 30, 2025

GH-1020: Update vcpkg revision

chorePRs that make misc changes.PRs that make misc changes.

Status: Draft (not ready).

apache/arrow-javanumber 1023

#1023 In apache/arrow-java;

· kou opened on Feb 16, 2026

Update vcpkg revision for Linux JNI build

Type: enhancementNew feature or requestNew feature or request

Status: Open.

#1020 In apache/arrow-java;

· kou opened on Feb 16, 2026

GH-577: Use JVM proxy settings in Netty client

enhancementPRs that add or improve features.PRs that add or improve features.

Status: Open (in progress).

apache/arrow-javanumber 1027

#1027 In apache/arrow-java;

· ennuite opened on Feb 23, 2026

GH-794: Avro file read and write support

enhancementPRs that add or improve features.PRs that add or improve features.

Status: Open (in progress).

apache/arrow-javanumber 802

#802 In apache/arrow-java;

· martin-traverse opened on Jul 21, 2025

MINOR: Bump org.apache.hive:hive-storage-api from 4.0.1 to 4.2.0

dependenciesPull requests that update a dependency filePull requests that update a dependency file

javaPull requests that update Java codePull requests that update Java code

Status: Open (in progress).

apache/arrow-javanumber 970

#970 In apache/arrow-java;

· dependabot opened on Jan 19, 2026

GH-1035: Support custom_metadata on RecordBatch

enhancementPRs that add or improve features.PRs that add or improve features.

Status: Draft (not ready).

apache/arrow-javanumber 1036

#1036 In apache/arrow-java;

· ennuite opened on Feb 24, 2026

GH-979: Adds documentation for Flight SQL

enhancementPRs that add or improve features.PRs that add or improve features.

Status: Open (in progress).

apache/arrow-javanumber 980

#980 In apache/arrow-java;

· jorisgillis opened on Jan 24, 2026

Add documentation of Flight SQL

Type: enhancementNew feature or requestNew feature or request

Status: Open.

#979 In apache/arrow-java;

· jorisgillis opened on Jan 24, 2026

Avro adapter - Read and write Avro container files

Type: enhancementNew feature or requestNew feature or request

Status: Open.

#794 In apache/arrow-java;

· martin-traverse opened on Jul 7, 2025

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

Type: enhancementNew feature or requestNew feature or request

Status: Open.

#1035 In apache/arrow-java;

· ennuite opened on Feb 24, 2026

[FlightRPC] Remove sketchy gRPC reflection code

help wantedExtra attention is neededExtra attention is needed

Type: bugSomething isn't workingSomething isn't working

Status: Open.

Bug

#939 In apache/arrow-java;

· lidavidm opened on Dec 29, 2025

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

enhancementPRs that add or improve features.PRs that add or improve features.

Status: Open (in progress).

apache/arrow-javanumber 937

#937 In apache/arrow-java;

· xborder opened on Dec 24, 2025

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

help wantedExtra attention is neededExtra attention is needed

Type: bugSomething isn't workingSomething isn't working

Status: Open.

#926 In apache/arrow-java;

· aarshivv opened on Dec 2, 2025

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

breaking-change

bug-fixPRs that fix a big.PRs that fix a big.

Status: Draft (not ready).

apache/arrow-javanumber 1081

#1081 In apache/arrow-java;

· dmitry-chirkov-dremio opened on Mar 21, 2026

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

Type: bugSomething isn't workingSomething isn't working

Status: Open.

#838 In apache/arrow-java;

· psixto-denodo opened on Sep 5, 2025

GH-1098: [Java][Vector] Fix always-true precondition check in LargeListVector.setValueCount

bug-fixPRs that fix a big.PRs that fix a big.

Status: Open (in progress).

apache/arrow-javanumber 1099

#1099 In apache/arrow-java;

· LuciferYang opened on Mar 30, 2026

[Java][Vector] Always-true precondition check in LargeListVector.setValueCount allows silent data corruption

Status: Open.

#1098 In apache/arrow-java;

· LuciferYang opened on Mar 30, 2026

GH-62: Optimize Flight SQL JDBC Statement execution paths

Status: Open (in progress).

apache/arrow-javanumber 1090

#1090 In apache/arrow-java;

· xborder opened on Mar 24, 2026

GH-44: Clear signature columns before re-populating in ArrowFlightStatement#executeFlightInfoQuery

bug-fixPRs that fix a big.PRs that fix a big.

Status: Open (in progress).

apache/arrow-javanumber 1135

#1135 In apache/arrow-java;

· hkad98 opened on May 6, 2026

[Java][FlightSQL] Column Duplication When Selecting from no result record in Arrow Flight SQL JDBC Driver

Type: enhancementNew feature or requestNew feature or request

Status: Open.

#44 In apache/arrow-java;

· mingnuj opened on Oct 18, 2024

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

enhancementPRs that add or improve features.PRs that add or improve features.

Status: Open (in progress).

apache/arrow-javanumber 1139

#1139 In apache/arrow-java;

· Verest opened on May 6, 2026

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

bug-fixPRs that fix a big.PRs that fix a big.

Status: Open (in progress).

apache/arrow-javanumber 1137

#1137 In apache/arrow-java;

· bodduv opened on May 6, 2026

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

bug-fixPRs that fix a big.PRs that fix a big.

Status: Open (in progress).

apache/arrow-javanumber 1136

#1136 In apache/arrow-java;

· bodduv opened on May 6, 2026