throw new IllegalStateException("The runtime context has not been initialized."); } } @Override public IterationRuntimeContext getIterationRuntimeContext() { if (this.runtimeContext == null) { throw new IllegalStateException("The runtime context has not been initialized."); } else if (this...
BufferBuilder类中的createBufferConsumer方法, 会从MemorySegment的指定offset构建BufferConsumer . new BufferConsumer(memorySegment, recycler, positionMarker, currentReaderPosition) 1. 3.5.1. 属性 BufferConsumer 有三个属性一个是Buffer buffer , 所有的memorySegment都会封装成NetworkBuffer . 剩下的CachedPositionMa...
checkState(bootstrap == null, "Netty client has already been initialized."); this.protocol = protocol; final long start = System.nanoTime(); //创建启动器bootstrap bootstrap = new Bootstrap(); // --- // Transport-specific configuration // --- switch (config.getTransportType()) { case ...
Following scenarios exist: // 1) releaseAllResources() already released buffers inside bufferQueue // -> then isReleased is set correctly // 2) releaseAllResources() did not yet release buffers from bufferQueue // -> we may or may not have set isReleased yet but will always wait for the...
this.initialRegistrationPause = Preconditions.checkNotNull(initialRegistrationPause); this.maxRegistrationPause = Preconditions.checkNotNull(maxRegistrationPause); this.refusedRegistrationPause = Preconditions.checkNotNull(refusedRegistrationPause); this.configuration = new UnmodifiableConfiguration(Preconditions.check...
Flink所有的配置参数都可以在客户端侧进行配置,建议用户直接修改客户端的“flink-conf.yaml”配置文件进行配置,如果通过Manager界面修改Flink服务参数,配置完成之后需要重新下载安装客户端:配置文件路径:客户端安装路径/Flink/flink/conf/flink-conf.yaml。文件的配置
(100) NULL COMMENT '新字段' AFTER updateTime; * * [5] 减字段: 无 CDC 监听消息 * ALTER TABLE xxxbackend.xxx_logevent DROP COLUMN new_column ; * @param sourceRecord CDC 监听消息 * @param collector * @throws Exception */ @Override public void deserialize(SourceRecord sourceRecord, ...
1.在flink sql client中执行sql 直接报错[ERROR] Could not execute SQL statement. Reason: org.apache.flink.shaded.zookeeper3.org.apache.zookeeper.KeeperException$ConnectionLossException: KeeperErrorCode = ConnectionLoss for /flink_base/flink 2.而且进入zookeeper中查询也是报错,求解求解 [omm@192-168-0-...
所以为了讲解watermarks的传播,需要对flink的很多模块/概念进行了解,涉及几乎各个阶段。我首先会讲解相关概念,然后会根据一个实例代码从以下几部分来解释:程序逻辑/计算图模型/程序执行。最后是详细Flink源码分析(略冗长,可以选择性阅读)。 0x02 相关概念 流计算被抽象成四个问题,what,where,when,how。
所以为了讲解watermarks的传播,需要对flink的很多模块/概念进行了解,涉及几乎各个阶段。我首先会讲解相关概念,然后会根据一个实例代码从以下几部分来解释:程序逻辑/计算图模型/程序执行。最后是详细Flink源码分析(略冗长,可以选择性阅读)。 0x02 相关概念 流计算被抽象成四个问题,what,where,when,how。