Issues

• [Java][FlightRPC] Unbounded allocation from untrusted FlightData frame length prefix in ArrowMessage.frame

  apache/arrow-java#1317 · Filter by author Arawoof06 opened on Oct 2, 2026

• Support negotiated IPC compression in Flight servers and JDBC

  apache/arrow-java#1316 · Filter by author xborder opened on Oct 1, 2026
  1

  

• Flight SQL JDBC interval strings use the default locale for digits

  apache/arrow-java#1311 · Filter by author Arawoof06 opened on Sep 30, 2026 · 20.0.0

• Add support for the arrow.json extension type

  Type: enhancement
  apache/arrow-java#1302 · Filter by author ddupg opened on Sep 20, 2026 · 20.0.0

• [CI] Build Java and C Data artifacts once

  Type: enhancement
  apache/arrow-java#1283 · Filter by author xborder opened on Sep 2, 2026 · 20.0.0
  1

  

• [JDBC] Honor DriverManager login timeout

  apache/arrow-java#1268 · Filter by author ennuite opened on Aug 28, 2026

• [JDBC] Implement DataSource login timeout

  apache/arrow-java#1267 · Filter by author ennuite opened on Aug 28, 2026

• DictionaryEncoder.decode accepts out-of-range dictionary indices

  apache/arrow-java#1261 · Filter by author Arawoof06 opened on Aug 18, 2026 · 20.0.0

• JNI local-reference accumulation in the string array helpers

  Type: bug
  apache/arrow-java#1256 · Filter by author K-ANOY opened on Aug 7, 2026
  1

• [Java] Parquet DatasetFileWriter not completely emptying allocator after finishing a write

  Type: usage
  apache/arrow-java#1255 · Filter by author gabortega opened on Aug 3, 2026

• Truly unchecked getters

  Type: enhancement
  apache/arrow-java#1252 · Filter by author robert3005 opened on Jul 28, 2026

• DecimalVector.setBigEndian writes oversized value before validating length

  apache/arrow-java#1246 · Filter by author Arawoof06 opened on Jul 23, 2026 · 20.0.0

• [java][Vector][Performance] PromotableWriter.setPosition resolving to itable dispatch on C2 compiled path.

  Type: enhancement
  apache/arrow-java#1238 · Filter by author sudheerbhat opened on Jul 20, 2026

• ArrowFlightJdbcArray.getArray(index, count) can read past the end of the array slice

  apache/arrow-java#1236 · Filter by author Arawoof06 opened on Jul 20, 2026

• [Java] VectorUnloader has multiple memory leak issues

  Type: bug
  apache/arrow-java#1234 · Filter by author zhangkre opened on Jul 18, 2026 · 20.0.0
  3

• [Java][FlightSQL][JDBC] Driver drops TLS for endpoint locations advertised by the server

  apache/arrow-java#1232 · Filter by author Arawoof06 opened on Jul 17, 2026 · 20.0.0

• [Java][JDBC] ClobConsumer writes past VarCharVector data buffer for large CLOBs

  apache/arrow-java#1230 · Filter by author Arawoof06 opened on Jul 15, 2026 · 20.0.0

• 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

• Out-of-bounds read for corrupt view offsets in BaseVariableWidthViewVector

  apache/arrow-java#1217 · Filter by author Arawoof06 opened on Jul 6, 2026 · 20.0.0

• Byte-array elements leak in FromSchemaByteArray()

  Type: bug
  apache/arrow-java#1205 · Filter by author K-ANOY opened on Jul 4, 2026 · 20.0.0

• [Java][FlightSQL] JDBC Driver fails when Looker formats the URL with ':direct=' instead of '://'

  Type: enhancement
  apache/arrow-java#1203 · Filter by author amirhzd opened on Jul 2, 2026
  7

• [Java][IPC] AbstractCompressionCodec.compress() writes prefix=0 for empty buffers, incompatible with C++/Python readers

  Type: bug
  apache/arrow-java#1196 · Filter by author zgdgod opened on Jun 29, 2026 · 20.0.0
  1

• Empty ListVector and LargeListVector can expose offset buffers with writerIndex greater than capacity

  apache/arrow-java#1194 · Filter by author prashanthbdremio opened on Jun 23, 2026 · 20.0.0
  2

• [Java] DictionaryEncoder doesn't crash when decoding index outside of Dictionary

  Type: bug
  apache/arrow-java#1158 · Filter by author jakobhok-neo4j opened on May 19, 2026 · 20.0.0

• [Java] Improve VectorSchemaRoot.getVector(String name) lookup performance

  Type: enhancement
  apache/arrow-java#1148 · Filter by author jjbskir opened on May 13, 2026