apache/arrow-java

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Official Java implementation of Apache Arrow

Stars: 94
Forks: 152
Open beginner issues: 0
Indexed issues: 429
Avg merge: 3d 16h
Merged PRs (30d): 11

Dominant language: Java
License: Apache-2.0
Last GitHub push: Sep 10, 2026
Latest indexed: Sep 14, 2026
Contributing guide: Contributing guide
Code of conduct: Code of conduct
Beginner labels: help wanted good first issue

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428 open issues indexed

[Java][FlightRPC] Flaky test TestDoExchange.tearDown Open

Type: enhancement

apache/arrow-java#384 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[Java] Avro to Arrow converter doesn't appear to generate valid arrow data Open

Type: bug

apache/arrow-java#383 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[Java][Dataset] FileSystemDataset: Support reading dictionary arrays Open

Type: enhancement

apache/arrow-java#382 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[Java][Release] Checkstyle plugin fails on ORC log4j.properties files Open

Type: bug

apache/arrow-java#381 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[Java] org.apache.arrow:arrow-dataset also need to pack Windows/Linux binary Open

Type: enhancement

apache/arrow-java#380 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[Java] Adapt to Java 9/9+ automatic module system Open

Type: enhancement

apache/arrow-java#379 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Create a stubbed FlightSQL sample application Open

apache/arrow-java#265 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[Java][Dataset] Enable CSV file format Open

Type: enhancement

apache/arrow-java#259 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[Java] Dummy NPEs in DefaultAllocationManagerOption Open

Type: enhancement

apache/arrow-java#258 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[Java] Unexpected Allocator states created after allocating buffer whose AllocationManager has different size from the requested size Open

Type: bug

apache/arrow-java#257 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[Java] PySpark3 with pandas 1.1.5 and pyarrow 2.0.0 getting the below error Open

Type: bug

apache/arrow-java#256 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[Java] Inconsistent logic for type IDs in Union vectors Open

Type: bug

apache/arrow-java#255 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[Java] Request for enhancements to BufferAllocator.close() Open

Type: enhancement

apache/arrow-java#253 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[Java] Introduce memory leak detector/handler utility to hook on unused unreleased buffers Open

Type: enhancement

apache/arrow-java#252 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[Java] Add support for sliced arrays in C Data Interface Open

Type: bug

apache/arrow-java#251 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[Java] Move base memory component tests from memory-netty to memory-core Open

Type: enhancement

apache/arrow-java#250 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[Java] AllocationListener should be called during ownership transferring Open

Type: enhancement

apache/arrow-java#249 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[Java] MurmurHasher doesn't take the final bytes into account if size % 4 != 0 Open

Type: bug

apache/arrow-java#248 · 0 comments · 2 reactions · 0 assignees · Indexed Sep 14, 2026
[Java] [Benchmarking] Large stdout when running benchmarks Open

Type: bug

apache/arrow-java#378 · 3 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[Release][Java] Verify staged maven artifacts Open

Type: enhancement

apache/arrow-java#377 · 10 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[Java] FuzzIpcFile: Uncaught exception in java.base/java.nio.HeapByteBuffer.<init> Open

Type: bug

apache/arrow-java#358 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[Java] FuzzIpcFile: Uncaught exception in java.base/java.nio.Buffer.checkIndex Open

Type: bug

apache/arrow-java#357 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[Java] FuzzIpcFile: Uncaught exception in org.apache.arrow.vector.types.pojo.Schema.convertSchema Open

Type: bug

apache/arrow-java#356 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[Java] FuzzIpcStream: Uncaught exception in java.base/java.nio.Buffer.createCapacityException Open

Type: bug

apache/arrow-java#355 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[Java] FuzzIpcStream: Uncaught exception in org.apache.arrow.memory.BaseAllocator.buffer Open

Type: bug

apache/arrow-java#354 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[Java] FuzzIpcStream: Uncaught exception in java.base/java.nio.Bits.reserveMemory Open

Type: bug

apache/arrow-java#353 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[Flight][Java][C++] Data read through Flight is having endianness issue on s390x Open

Type: bug

apache/arrow-java#352 · 8 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[Docs][Java] Dataset Javadocs are not being published Open

Component: Documentation Type: enhancement

apache/arrow-java#351 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[Java] ORC JNI bridge should use the C data interface Open

apache/arrow-java#350 · 5 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[Java] Problem to get current reservation of JVM direct memory on macOS Big Sur Open

apache/arrow-java#349 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[FlightRPC][FlightSQL][Java] Make FlightSqlClientDemo a general purpose tool Open

Type: enhancement

apache/arrow-java#348 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[FlightRPC][Java] CallbackBackpressureStrategy should not rely on listener.isReady() Open

Type: bug

apache/arrow-java#346 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[Java] Spark job fails due to arrow buf limitation Open

Type: bug

apache/arrow-java#342 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
ListVector#getBuffers returns buffers in the wrong order for usage of VectorLoader Open

Type: bug

apache/arrow-java#341 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Create build scripts and documentation for producing DLLs for JNI interfaces Open

Type: enhancement

apache/arrow-java#318 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Bundle DLLs for JNI interfaces into Maven Jars Open

Type: enhancement

apache/arrow-java#317 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[FlightRPC][Java] Provide standard way to get client IP address Open

Type: enhancement

apache/arrow-java#316 · 5 comments · 0 reactions · 1 assignee · Indexed Sep 14, 2026
[Java][CI] Add testing to current java-jars builds and extend to JDK 11 and 17 Open

apache/arrow-java#315 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[Java][C++] Reorganize JNI code from several modules Open

Type: bug

apache/arrow-java#314 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[Java] DictionaryProvider leaks memory while adding dictionaries with duplicate encoding Open

Type: bug

apache/arrow-java#313 · 7 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[Java] Further Consolidate JNI compilation Open

Type: enhancement

apache/arrow-java#312 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[Java] arrow-jdbc defines type but not value mapping for struct types Open

Type: enhancement

apache/arrow-java#310 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[Java] Ensure Flight with native Netty transport is actually being tested Open

Type: enhancement

apache/arrow-java#309 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[CI][Java] Use current cookbooks projects to validate new release versions Open

Type: enhancement

apache/arrow-java#308 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[C++][Java] Dataset: Support reading from fixed offset of a file for Parquet format Open

Type: enhancement

apache/arrow-java#307 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[Java] ListVector to return same UnionListWriter instead of returning new UnionListWriter Open

Type: enhancement

apache/arrow-java#306 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[Java][Docs] Compare/contrast the Netty and Unsafe memory backends Open

Component: Documentation Type: enhancement

apache/arrow-java#305 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[Java] Improve testing of Dataset bindings Open

Type: enhancement

apache/arrow-java#304 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[Java][Docs] Document the use of the batchSize argument in Dataset ScanOptions Open

Type: enhancement

apache/arrow-java#303 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[CI][Java] Automatically extract dependent library versions from pom.xml for s390x Open

Type: enhancement

apache/arrow-java#302 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026

apache/arrow-java

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