Apache Flink 1.6.4 发布，开源流处理框架

Apache Flink 1.6.4 已发布，这是 1.6 系列的第四个修复版本，包含超过25项的修复及对 1.6.3.版本的改进，建议所有用户升级。Apache Flink 是一个开源的流处理框架，应用于分布式、高性能、始终可用的、准确的数据流应用程序。

新版部分更新内容如下：

Bug

• [FLINK-10721] - Kafka discovery-loop exceptions may be swallowed

• [FLINK-10761] - MetricGroup#getAllVariables can deadlock

• [FLINK-10774] - connection leak when partition discovery is disabled and open throws exception

• [FLINK-10848] - Flink's Yarn ResourceManager can allocate too many excess containers

• [FLINK-11022] - Update LICENSE and NOTICE files for older releases

• ……

Improvement

• [FLINK-10910] - Harden Kubernetes e2e test

• [FLINK-11079] - Skip deployment for flnk-storm-examples

• [FLINK-11207] - Update Apache commons-compress from 1.4.1 to 1.18

• [FLINK-11262] - Bump jython-standalone to 2.7.1

• [FLINK-11289] - Rework example module structure to account for licensing

• [FLINK-11304] - Typo in time attributes doc

• [FLINK-11469] - fix Tuning Checkpoints and Large State doc

完整更新内容可查阅发行说明：https://flink.apache.org/news/2019/02/25/release-1.6.4.html

更新 Maven 依赖：

<dependency>
  <groupId>org.apache.flink</groupId>
  <artifactId>flink-java</artifactId>
  <version>1.6.4</version>
</dependency>
<dependency>
  <groupId>org.apache.flink</groupId>
  <artifactId>flink-streaming-java_2.11</artifactId>
  <version>1.6.4</version>
</dependency>
<dependency>
  <groupId>org.apache.flink</groupId>
  <artifactId>flink-clients_2.11</artifactId>
  <version>1.6.4</version>
</dependency>

下载 binary 地址：

https://flink.apache.org/downloads.html