查看Job Manager里面的日志 发现错误,java.lang.RuntimeException: No data for required key 'port' 解决方法; 方法一:在Program Argument里添加主机名和端口号,该方法适合动态获取host和port的情况。 方法二:直接将读取文本流写死 DataStreamSource<String> lineDataStream = env.socketTextStream("hadoop102", 7777...
org.apache.flink.client.program.ProgramInvocationException: The main method caused an error: No dataforrequired key 'port'at org.apache.flink.client.program.PackagedProgram.callMainMethod(PackagedProgram.java:372) ~[flink-dist_2.12-1.13.0.jar:1.13.0] at org.apache.flink.client.program.PackagedPro...
case class WordWithCount(word: String, count: Long) val text = env.socketTextStream(host, port, '\n') val windowCounts = text.flatMap { w => w.split("\\s") } .map { w => WordWithCount(w, 1) } .keyBy("word") .timeWindow(Time.seconds(5)) .sum("count") windowCounts.print...
分区实现KeyGroupRangeAssignment.assignKeyToParallelOperator(key, maxParallelism, numberOfOutputChannels); 分区代码 numberOfOutputChannels: 一共分为多少个分区,即并行度为多少 maxParallelism:最大并行度,默认为128 key:处理的数据,对应的key的值 KeyGroupRangeAssignment.assignKeyToParallelOperator(key, maxParallel...
Copy the.jarpackage (for exampleFlinkStreamJavaExample.jar) created in3to the Flink running environment (Flink client), for example,/ophadoopclient, and then in that directory, create theconffolder and copy the required configuration files to theconffolder. For details, seePreparing an Operating ...
.port(...) .databaseList("<databaseName>") .tableList("<databaseName>.") .username(...) .password(...) .serverId(...) .deserializer(...) .includeSchemaChanges(true) // 配置获取DDL事件的参数 .build(); ... // 其他处理逻辑 Flink CDC支持MySQL整库同步吗?怎么做? 支持的,实时计算...
User does not have the'LOCK TABLES'privilege required to obtain a consistent snapshot by preventing concurrent writes to tables. 原因是连接MySQL的用户缺乏必要的CDC权限。 Flink SQL CDC基于Debezium实现。当启动MySQL CDC源时,它将获取一个全局读取锁(FLUSH TABLES WITH READ LOCK),该锁将阻止其他数据库的...
key.format 写入Kafka消息key部分时使用的格式。 否 String 无 取值如下: csv json topic Kafka Topic名称。 否 String 无 开启时,所有的数据都会写入这个Topic。 说明 如果没有开启,每条数据会写入到其TableID对应字符串(通过.拼接生成)的Topic,例如databaseName.tableName。 partition.strategy 数据写入Kafka分区的...
文件的配置格式为key:value。 例:taskmanager.heap.size: 1024mb 注意配置项key:与value之间需有空格分隔。 配置详情 本章节为你介绍如下参数配置: JobManager & TaskManager: JobManager和TaskManager是Flink的主要组件,针对各种安全场景和性能场景,配置项包括通信端口,内存管理,连接重试等。
What do I do if my account does not have the required permissions when I log on to the Realtime Compute for Apache Flink console? Problem description When I log on to the Realtime Compute for Apache Flink console, the error message that is shown in the following figure appears. Cause ...