1.发布时间

KIP Freeze时间：2019年5月11日

Feature Freeze时间：2019年5月17日

Code Freeze时间：2019年5月29日

Release时间：2019年6月12日

2.版本需求

Kafka2.3.0版本对以下29个特性进行了开发。

KIP-465: Add Consolidated Connector Endpoint to Connect REST API

KIP-462: Use local thread id for KStreams

KIP-461: Improve Replica Fetcher behavior at handling partition failure

KIP-458: Connector Client Config Override Policy

KIP-454: Expansion of the ConnectClusterState interface

KIP-453: Add close() method to RocksDBConfigSetter

KIP-449: Add connector contexts to log messages in Connect workers

KIP-445: In-memory Session Store

KIP-443: Return to default segment.ms and segment.index.bytes in Streams repartition topics

KIP-442: Return to default max poll interval in Streams

KIP-436: Add a metric indicating start time

KIP-430 - Return Authorized Operations in Describe Responses

KIP-428: Add in-memory window store

KIP-427: Add AtMinIsr topic partition category (new metric & TopicCommand option)

KIP-425: Add some Log4J Kafka Appender Properties for Producing to Secured Brokers

KIP-421: Support resolving externalized secrets in AbstractConfig

KIP-417: Allow JmxTool to connect to a secured RMI port

KIP-415: Incremental Cooperative Rebalancing in Kafka Connect

KIP-411: Make default Kafka Connect worker task client IDs distinct

KIP-402: Improve fairness in SocketServer processors

KIP-361: Add Consumer Configuration to Disable Auto Topic Creation

KIP-351: Add --under-min-isr option to describe topics command

KIP-345: Introduce static membership protocol to reduce consumer rebalances

KIP-339: Create a new IncrementalAlterConfigs API

KIP-331 Add default implementation to close() and configure() for Serializer, Deserializer and Serde

KIP-313: Add KStream.flatTransform and KStream.flatTransformValues

KIP-307: Allow to define custom processor names with KStreams DSL

KIP-258: Allow to Store Record Timestamps in RocksDB

KIP-354: Add a Maximum Log Compaction Lag