Issues

• CVE-2025-66566 Dependency maven:org.lz4:lz4-java:1.8.0 is vulnerable

  spring-attic/reactor-kafka#434 · Filter by author patpatpat123 opened on Feb 1, 2026

• Paused by user partitions are resumed after rebalance with CooperativeStickyAssignor

  spring-attic/reactor-kafka#432 · Filter by author ajax-shuliak-n opened on Jan 13, 2026
  1

• Committing ahead breaks at-most-once delivery guarantee for other consumers after rebalance

  spring-attic/reactor-kafka#421 · Filter by author mikkolaj opened on Apr 13, 2025

• Incompatible with kafka-clients 4.0.0

  spring-attic/reactor-kafka#420 · Filter by author monosoul opened on Mar 24, 2025

• Resume Not working

  spring-attic/reactor-kafka#411 · Filter by author earthspiligrim opened on Dec 17, 2024

• Consumers are getting dropped off on offset commit failures during prolonged kafka rebalancing

  spring-attic/reactor-kafka#394 · Filter by author aswinavofficial opened on Oct 9, 2024
  9

• Kafka interceptor with Micrometer Observation

  type/enhancement
  spring-attic/reactor-kafka#393 · Filter by author Renboo opened on Sep 25, 2024

• Adding doOnSubscribe directly on receiveAutoAck breaks tracing propagation

  spring-attic/reactor-kafka#392 · Filter by author Thyago opened on Aug 7, 2024

• Not able to build the project from source

  spring-attic/reactor-kafka#391 · Filter by author imtavish04 opened on Jul 22, 2024

• Consumption stopped with slow consumer

  ❓need-triage
  spring-attic/reactor-kafka#386 · Filter by author abialas opened on Mar 7, 2024
  2

• Application Pod Crashed: Kafka Producer Exhausted 3GB Heap Memory When Broker Failed

  ❓need-triage
  spring-attic/reactor-kafka#385 · Filter by author owaiscs001 opened on Mar 1, 2024

• Expose KafkaConsumer in ReceiverOptionsCustomizer.addAssignListener() - parity with KafkaBindingRebalanceListener

  ❓need-triage
  spring-attic/reactor-kafka#379 · Filter by author mvazquezrius opened on Jan 8, 2024

• Provide option for KafkaReceiver's graceful shutdown

  ❓need-triage
  spring-attic/reactor-kafka#378 · Filter by author cjlee38 opened on Jan 3, 2024
  4

• Metrics reactor_{receiver|sender}_active{sum|count|bucket} always shows 0

  ❓need-triage
  spring-attic/reactor-kafka#377 · Filter by author patpatpat123 opened on Dec 30, 2023
  1

• Reactive kafka consumer doesn't pause on calling the consumer.pause() method

  ❓need-triage
  spring-attic/reactor-kafka#375 · Filter by author ghost opened on Dec 12, 2023
  3

• Rebalancing always waits until maxDelayRebalance with AckMode.EXACTLY_ONCE

  ❓need-triage
  spring-attic/reactor-kafka#371 · Filter by author damn1kk opened on Nov 13, 2023

• Documentation Feedback on Reactor Kafka's Observation API

  for/user-attention
  spring-attic/reactor-kafka#369 · Filter by author almogtavor opened on Oct 30, 2023
  6

• GH-321 / PR 325 - Observation propagation

  ❓need-triage
  spring-attic/reactor-kafka#368 · Filter by author janchristian-haddorp opened on Oct 30, 2023
  4

• Topic partition is processing on 2 consumers after consumer group rebalance

  for/user-attention
  spring-attic/reactor-kafka#345 · Filter by author ajax-osadchuk-r opened on May 19, 2023
  12

• KafkaProducer#close() seems to leak Kafka resources.

  ❓need-triage
  spring-attic/reactor-kafka#341 · Filter by author basking2 opened on Apr 23, 2023
  9

• Kafka consumer unable to connect to Kafka after Kafka restart

  ❓need-triage
  spring-attic/reactor-kafka#340 · Filter by author Avinashshetty44 opened on Apr 20, 2023
  1

• Kafka Consumer memory Leak

  for/user-attention
  spring-attic/reactor-kafka#339 · Filter by author jilsonjoseph opened on Apr 19, 2023
  1

• Consumer does not rejoin group after heartbeat timeout

  ❓need-triage
  spring-attic/reactor-kafka#336 · Filter by author 62mkv opened on Apr 14, 2023
  7

• documentation: clarify "commit during rebalance"

  ❓need-triage
  spring-attic/reactor-kafka#335 · Filter by author 62mkv opened on Apr 13, 2023

• Behaviour of ReceiverOptions.addAssignListener changed

  ❓need-triage
  spring-attic/reactor-kafka#334 · Filter by author gorkemaygul opened on Apr 5, 2023
  3