Apache Flink社区宣布Flink 1.10.0正式发布!本次Release版本修复1.2K个问题,对Flink作业的整体性能和稳定性做了重大改进,同时增加了对K8S,Python的支持。 这个版本标志着与Blink集成的完成,并且强化了流式SQL与Hive的集成,本文将详细介绍新功能和主要的改进。 一、内存管理优化
流处理和批处理用了不同的配置模型; 流处理的堆外配置RocksDB复杂,需要用户配置; 为了使内存管理更明确直观,Flink 1.10对TaskExecutor内存模型和配置做了重大改进,这个更改使FLink更适合于各种部署环境:K8S,Yarn,Mesos。 这种更改统一了入口点,使得下游框架比如zeppelin的编程更加容易。 二、集成Kubernetes这对于想要在容器中使用Flink的用户是一个非常好的消息。 在Flink1.10中推出了Active Kubernetes集成 Flink的ResourceManager( 用户可以简单地参考Kubernetes配置选项,然后使用以下命令在CLI中将作业提交到Kubernetes上的现有Flink会话: ./bin/flink run -d -e kubernetes-session -Dkubernetes.cluster-id=<ClusterId> examples/streaming/WindowJoin.jar 三、集成HiveFlink 1.10通过开发将Hive集成到Flink,可用于生产环境。 并且支持大部分Hive版本,Flink支持Hive版本列表:
需要引入依赖 <!-- Flink Dependency --> <dependency> <groupId>org.apache.flink</groupId> <artifactId>flink-connector-hive_2.11</artifactId> <version>1.10.0</version> <scope>provided</scope> </dependency> <dependency> <groupId>org.apache.flink</groupId> <artifactId>flink-table-api-java-bridge_2.11</artifactId> <version>1.10.0</version> <scope>provided</scope> </dependency> <!-- Hive Dependency --> <dependency> <groupId>org.apache.hive</groupId> <artifactId>hive-exec</artifactId> <version>${hive.version}</version> <scope>provided</scope> </dependency> 连接Hive代码 val settings = EnvironmentSettings.newInstance().useBlinkPlanner().inBatchMode().build() val tableEnv = TableEnvironment.create(settings) val name = "myhive" val defaultDatabase = "mydatabase" val hiveConfDir = "/opt/hive-conf" // a local path val version = "2.3.4" val hive = new HiveCatalog(name, defaultDatabase, hiveConfDir, version) tableEnv.registerCatalog("myhive", hive) // set the HiveCatalog as the current catalog of the session tableEnv.useCatalog("myhive") 四、PyFlink:支持UDF从Flink 1.10开始,PyFlink开始支持UDF函数。 用户还可以 pip install apache-flink 五、其他重要变化
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