Kafka Zookeeper kraft【Self-Managed Metadata】演进历史关键信息

【脱离ZooKeeper依赖的Kafka Controller Quorum（KRaft）机制浅析 - CSDN App】
http://t.csdn.cn/JCWQm

3.0.0
Released September 21, 2021
Release Notes
Source download: kafka-3.0.0-src.tgz (asc, sha512)
Binary downloads:
Scala 2.12 - kafka_2.12-3.0.0.tgz (asc, sha512)
Scala 2.13 - kafka_2.13-3.0.0.tgz (asc, sha512)
We build for multiple versions of Scala. This only matters if you are using Scala and you want a version built for the same Scala version you use. Otherwise any version should work (2.13 is recommended).
Kafka 3.0.0 includes a number of significant new features. Here is a summary of some notable changes:

The deprecation of support for Java 8 and Scala 2.12
Kafka Raft support for snapshots of the metadata topic and other improvements in the self-managed quorum
Stronger delivery guarantees for the Kafka producer enabled by default
Deprecation of message formats v0 and v1
Optimizations in OffsetFetch and FindCoordinator requests
More flexible Mirror Maker 2 configuration and deprecation of Mirror Maker 1
Ability to restart a connector's tasks on a single call in Kafka Connect
Connector log contexts and connector client overrides are now enabled by default
Enhanced semantics for timestamp synchronization in Kafka Streams
Revamped public API for Stream's TaskId
Default serde becomes null in Kafka
For more information, please read the detailed Release Notes.

2.8.0
Released April 19, 2021
Release Notes
Source download: kafka-2.8.0-src.tgz (asc, sha512)
Binary downloads:
Scala 2.12 - kafka_2.12-2.8.0.tgz (asc, sha512)
Scala 2.13 - kafka_2.13-2.8.0.tgz (asc, sha512)
We build for multiple versions of Scala. This only matters if you are using Scala and you want a version built for the same Scala version you use. Otherwise any version should work (2.13 is recommended).
Kafka 2.8.0 includes a number of significant new features. Here is a summary of some notable changes:

Early access of replace ZooKeeper with a self-managed quorum
Add Describe Cluster API
Support mutual TLS authentication on SASL_SSL listeners
JSON request/response debug logs
Limit broker connection creation rate
Topic identifiers
Expose task configurations in Connect REST API
Update Streams FSM to clarify ERROR state meaning
Extend StreamJoined to allow more store configs
More convenient TopologyTestDriver construtors
Introduce Kafka-Streams-specific uncaught exception handler
API to start and shut down Streams threads
Improve TimeWindowedDeserializer and TimeWindowedSerde to handle window size
Improve timeouts and retries in Kafka Streams
For more information, please read the detailed Release Notes.

2.5.0
Released April 15, 2020
Release Notes
Source download: kafka-2.5.0-src.tgz (asc, sha512)
Binary downloads:
Scala 2.12 - kafka_2.12-2.5.0.tgz (asc, sha512)
Scala 2.13 - kafka_2.13-2.5.0.tgz (asc, sha512)
We build for multiple versions of Scala. This only matters if you are using Scala and you want a version built for the same Scala version you use. Otherwise any version should work (2.12 is recommended).
Kafka 2.5.0 includes a number of significant new features. Here is a summary of some notable changes:

TLS 1.3 support (1.2 is now the default)
Co-groups for Kafka Streams
Incremental rebalance for Kafka Consumer
New metrics for better operational insight
Upgrade Zookeeper to 3.5.7
Deprecate support for Scala 2.11
For more information, please read the detailed Release Notes.

2.4.1
Released March 12, 2020
Release Notes
Source download: kafka-2.4.1-src.tgz (asc, sha512)
Binary downloads:
Scala 2.11 - kafka_2.11-2.4.1.tgz (asc, sha512)
Scala 2.12 - kafka_2.12-2.4.1.tgz (asc, sha512)
Scala 2.13 - kafka_2.13-2.4.1.tgz (asc, sha512)
We build for multiple versions of Scala. This only matters if you are using Scala and you want a version built for the same Scala version you use. Otherwise any version should work (2.12 is recommended).
For more information, please read the detailed Release Notes.

2.4.0
Released December 16, 2019
Release Notes
Source download: kafka-2.4.0-src.tgz (asc, sha512)
Binary downloads:
Scala 2.11 - kafka_2.11-2.4.0.tgz (asc, sha512)
Scala 2.12 - kafka_2.12-2.4.0.tgz (asc, sha512)
Scala 2.13 - kafka_2.13-2.4.0.tgz (asc, sha512)
We build for multiple versions of Scala. This only matters if you are using Scala and you want a version built for the same Scala version you use. Otherwise any version should work (2.12 is recommended).
Kafka 2.4.0 includes a number of significant new features. Here is a summary of some notable changes:

Allow consumers to fetch from closest replica.
Support for incremental cooperative rebalancing to the consumer rebalance protocol.
MirrorMaker 2.0 (MM2), a new multi-cluster, cross-datacenter replication engine.
New Java authorizer Interface.
Support for non-key joining in KTable.
Administrative API for replica reassignment.
For more information, please read the detailed Release Notes.

Kafka将逐步弃用对zookeeper的依赖_黑曼巴-CSDN博客
https://blog.csdn.net/yangyijun1990/article/details/111874645

KIP-500: Replace ZooKeeper with a Self-Managed Metadata Quorum - Apache Kafka - Apache Software Foundation
https://cwiki.apache.org/confluence/display/KAFKA/KIP-500:+Replace+ZooKeeper+with+a+Self-Managed+Metadata+Quorum

Index - Apache Kafka - Apache Software Foundation
https://cwiki.apache.org/confluence/display/KAFKA/Index

Kafka Internals - Apache Kafka - Apache Software Foundation
https://cwiki.apache.org/confluence/display/KAFKA/Kafka+Internals

Kafka mirroring (MirrorMaker) - Apache Kafka - Apache Software Foundation
https://cwiki.apache.org/confluence/display/KAFKA/Kafka+mirroring+(MirrorMaker)