基于Flink CDC实时同步数据（MySQL到MySQL）

一、环境

jdk8
Flink 1.16.1（部署在远程服务器：192.168.137.99）
Flink CDC 2.3.0
MySQL 8.0（安装在本地：192.168.3.31）（安装部署过程略）

二、准备

准备三个数据库：flink_source、flink_sink、flink_sink_second。
将flink_source.source_test表实时同步到flink_sink和flink_sink_second的sink_test表。
（建库建表过程略）

三、Flink SQL Client上开发SQL作业

开发过程可以参考Flink CDC官网的例子（譬如：基于 Flink CDC 构建 MySQL 和 Postgres 的 Streaming ETL）。
这里介绍的是MySQL到MySQL的同步，稍有不同，需要下载JDBC SQL连接器的依赖包（下载地址，使用方法），放到目录 {flink-1.16.1}/lib/ 下，用于使用JDBC SQL连接器连接MySQL的sink库。

✳注意下面两个jar的区别，是需要将flink-sql-connector-mysql-cdc-2.3.0.jar放到{flink-1.16.1}/lib/ 下。由于网络限制，本人最初是通过maven下载的flink-connector-mysql-cdc-2.3.0.jar，导致了各种找不到类的异常。
flink-sql-connector-mysql-cdc-2.3.0.jar（包含有依赖的jar）
flink-connector-mysql-cdc-2.3.0.jar（不包含依赖jar）

flink-sql-connector-mysql-cdc-2.3.0.jar：

<dependency><groupId>com.ververica</groupId><artifactId>flink-sql-connector-mysql-cdc</artifactId><version>2.3.0</version></dependency>

flink-connector-mysql-cdc-2.3.0.jar：

<dependency><groupId>com.ververica</groupId><artifactId>flink-connector-mysql-cdc</artifactId><version>2.3.0</version></dependency>

使用下面的命令启动 Flink SQL CLI

./bin/sql-client.sh

然后使用下面的建表语句创建Flink表，以及将flink_source.source_test表实时同步到flink_sink、flink_sink_second的sink_test表。

Flink SQL> SET execution.checkpointing.interval = 3s;[INFO] Session property has been set.

Flink SQL> CREATE TABLE source_test (
>   user_id STRING,
>   user_name STRING,
>   PRIMARY KEY (user_id) NOT ENFORCED
> ) WITH (
>    'connector' = 'mysql-cdc',
>    'hostname' = '192.168.3.31',
>    'port' = '3306',
>    'username' = 'root',
>    'password' = '******',
>    'database-name' = 'flink_source',
>    'table-name' = 'source_test'
> );[INFO] Execute statement succeed.

Flink SQL> CREATE TABLE sink_test (
>   user_id STRING,
>   user_name STRING,
>   PRIMARY KEY (user_id) NOT ENFORCED
> ) WITH (
>    'connector' = 'jdbc',
>    'url' = 'jdbc:mysql://192.168.3.31:3306/flink_sink',
>    'driver' = 'com.mysql.cj.jdbc.Driver',
>    'username' = 'root',
>    'password' = '******',
>    'table-name' = 'sink_test'
> );[INFO] Execute statement succeed.

Flink SQL> CREATE TABLE sink_test_second (
>   user_id STRING,
>   user_name STRING,
>   PRIMARY KEY (user_id) NOT ENFORCED
> ) WITH (
>    'connector' = 'jdbc',
>    'url' = 'jdbc:mysql://192.168.3.31:3306/flink_sink_second',
>    'driver' = 'com.mysql.cj.jdbc.Driver',
>    'username' = 'root',
>    'password' = '******',
>    'table-name' = 'sink_test'
> );[INFO] Execute statement succeed.

Flink SQL> insert into sink_test select*from source_test;[INFO] Submitting SQL update statement to the cluster...[INFO] SQL update statement has been successfully submitted to the cluster:
Job ID: 0c49758cc251699f0b4acd6c9f735e6e

Flink SQL> insert into sink_test_second select*from source_test;[INFO] Submitting SQL update statement to the cluster...[INFO] SQL update statement has been successfully submitted to the cluster:
Job ID: ecea685a715d7d40ee1a94aac3236c18

Flink SQL>

访问Flink web：http://192.168.137.99:8081/#/job/running，可以看到已经新建了两个作业。
在这里插入图片描述

四、使用本机执行环境开发SQL作业

直接贴代码。
pom.xml：

<?xml version="1.0" encoding="UTF-8"?><projectxmlns="http://maven.apache.org/POM/4.0.0"xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"><modelVersion>4.0.0</modelVersion><groupId>org.example</groupId><artifactId>FlinkDemo</artifactId><version>1.0-SNAPSHOT</version><packaging>jar</packaging><properties><maven.compiler.source>8</maven.compiler.source><maven.compiler.target>8</maven.compiler.target><project.build.sourceEncoding>UTF-8</project.build.sourceEncoding><flink.version>1.16.1</flink.version><flink-cdc.version>2.3.0</flink-cdc.version></properties><dependencies><dependency><groupId>org.apache.flink</groupId><artifactId>flink-java</artifactId><version>${flink.version}</version></dependency><dependency><groupId>org.apache.flink</groupId><artifactId>flink-clients</artifactId><version>${flink.version}</version></dependency><dependency><groupId>org.apache.flink</groupId><artifactId>flink-streaming-java</artifactId><version>${flink.version}</version></dependency><dependency><groupId>org.apache.flink</groupId><artifactId>flink-table-api-java-bridge</artifactId><version>${flink.version}</version></dependency><dependency><groupId>org.apache.flink</groupId><artifactId>flink-table-planner-loader</artifactId><version>${flink.version}</version></dependency><dependency><groupId>org.apache.flink</groupId><artifactId>flink-table-runtime</artifactId><version>${flink.version}</version></dependency><dependency><groupId>org.apache.flink</groupId><artifactId>flink-connector-base</artifactId><version>${flink.version}</version></dependency><dependency><groupId>org.apache.flink</groupId><artifactId>flink-connector-jdbc</artifactId><version>${flink.version}</version></dependency><!-- mysql-cdc fat jar --><dependency><groupId>com.ververica</groupId><artifactId>flink-sql-connector-mysql-cdc</artifactId><version>${flink-cdc.version}</version></dependency><!--<dependency>
            <groupId>com.ververica</groupId>
            <artifactId>flink-connector-mysql-cdc</artifactId>
            <version>${flink-cdc.version}</version>
        </dependency>--></dependencies></project>

FlinkDemo.java：

packageorg.example;importorg.apache.flink.streaming.api.environment.StreamExecutionEnvironment;importorg.apache.flink.table.api.EnvironmentSettings;importorg.apache.flink.table.api.bridge.java.StreamTableEnvironment;publicclassFlinkDemo{publicstaticvoidmain(String[] args)throwsException{StreamExecutionEnvironment env =null;// 本机执行环境
        env =StreamExecutionEnvironment.getExecutionEnvironment();// 远程执行环境//        env = StreamExecutionEnvironment.createRemoteEnvironment("192.168.137.99", 8081);
        env.enableCheckpointing(3000l).setParallelism(2);EnvironmentSettings settings =EnvironmentSettings.newInstance().inStreamingMode().build();StreamTableEnvironment tableEnv =StreamTableEnvironment.create(env, settings);// CREATE TABLE source_test
        tableEnv.executeSql(sourceDDL());// CREATE TABLE sink_test
        tableEnv.executeSql(sinkDDL());// CREATE TABLE sink_test_second
        tableEnv.executeSql(sinkDDLOfSecondDb());// 将source_test同步到sink_test和sink_test_second
        tableEnv.getConfig().set("pipeline.name","Flink Demo - To sink_test");// 设置job名称
        tableEnv.executeSql("insert into sink_test select * from source_test;");
        tableEnv.getConfig().set("pipeline.name","Flink Demo - To sink_test_second");// 设置job名称
        tableEnv.executeSql("insert into sink_test_second select * from source_test;");}publicstaticStringsourceDDL(){String sourceDDL ="CREATE TABLE source_test (\n"+"  user_id STRING,\n"+"  user_name STRING,\n"+"  PRIMARY KEY (user_id) NOT ENFORCED\n"+") WITH (\n"+"   'connector' = 'mysql-cdc',\n"+"   'hostname' = '192.168.3.31',\n"+"   'port' = '3306',\n"+"   'username' = 'root',\n"+"   'password' = '******',\n"+"   'database-name' = 'flink_source',\n"+"   'table-name' = 'source_test'\n"+");";return sourceDDL;}publicstaticStringsinkDDL(){String sinkDDL ="CREATE TABLE sink_test (\n"+"  user_id STRING,\n"+"  user_name STRING,\n"+"  PRIMARY KEY (user_id) NOT ENFORCED\n"+") WITH (\n"+"   'connector' = 'jdbc',\n"+"   'url' = 'jdbc:mysql://192.168.3.31:3306/flink_sink',\n"+"   'driver' = 'com.mysql.cj.jdbc.Driver',\n"+"   'username' = 'root',\n"+"   'password' = '******',\n"+"   'table-name' = 'sink_test'\n"+");";return sinkDDL;}publicstaticStringsinkDDLOfSecondDb(){String sinkDDL ="CREATE TABLE sink_test_second (\n"+"  user_id STRING,\n"+"  user_name STRING,\n"+"  PRIMARY KEY (user_id) NOT ENFORCED\n"+") WITH (\n"+"   'connector' = 'jdbc',\n"+"   'url' = 'jdbc:mysql://192.168.3.31:3306/flink_sink_second',\n"+"   'driver' = 'com.mysql.cj.jdbc.Driver',\n"+"   'username' = 'root',\n"+"   'password' = '******',\n"+"   'table-name' = 'sink_test'\n"+");";return sinkDDL;}}

五、远程执行环境开发SQL作业

提交SQL作业到远程Flink集群上执行，需要使用下面的方法创建执行环境：

StreamExecutionEnvironment.createRemoteEnvironment("192.168.137.99",8081);

而本机执行是：

StreamExecutionEnvironment.getExecutionEnvironment();

上面的FlinkDemo.java，修改执行环境后，运行代码提交作业：
在这里插入图片描述

另外在远程执行的时候，必须使用flink-sql-connector-mysql-cdc，不能使用flink-connector-mysql-cdc。否则会报错：Caused by: java.io.StreamCorruptedException: unexpected block data

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ls-2.7.1.jar;E:\java\.m2\repository\net\sourceforge\argparse4j\argparse4j\0.7.0\argparse4j-0.7.0.jar;E:\java\.m2\repository\org\apache\kafka\connect-transforms\2.7.1\connect-transforms-2.7.1.jar;E:\java\.m2\repository\com\fasterxml\jackson\jaxrs\jackson-jaxrs-json-provider\2.10.5\jackson-jaxrs-json-provider-2.10.5.jar;E:\java\.m2\repository\com\fasterxml\jackson\jaxrs\jackson-jaxrs-base\2.10.5\jackson-jaxrs-base-2.10.5.jar;E:\java\.m2\repository\com\fasterxml\jackson\module\jackson-module-jaxb-annotations\2.10.5\jackson-module-jaxb-annotations-2.10.5.jar;E:\java\.m2\repository\jakarta\xml\bind\jakarta.xml.bind-api\2.3.2\jakarta.xml.bind-api-2.3.2.jar;E:\java\.m2\repository\jakarta\activation\jakarta.activation-api\1.2.1\jakarta.activation-api-1.2.1.jar;E:\java\.m2\repository\org\glassfish\jersey\containers\jersey-container-servlet\2.31\jersey-container-servlet-2.31.jar;E:\java\.m2\repository\org\glassfish\jersey\containers\jersey-container-servlet-core\2.31\jersey-container-servlet-core-2.31.jar;E:\java\.m2\repository\org\glassfish\hk2\external\jakarta.inject\2.6.1\jakarta.inject-2.6.1.jar;E:\java\.m2\repository\jakarta\ws\rs\jakarta.ws.rs-api\2.1.6\jakarta.ws.rs-api-2.1.6.jar;E:\java\.m2\repository\org\glassfish\jersey\inject\jersey-hk2\2.31\jersey-hk2-2.31.jar;E:\java\.m2\repository\org\glassfish\hk2\hk2-locator\2.6.1\hk2-locator-2.6.1.jar;E:\java\.m2\repository\org\glassfish\hk2\external\aopalliance-repackaged\2.6.1\aopalliance-repackaged-2.6.1.jar;E:\java\.m2\repository\org\glassfish\hk2\hk2-api\2.6.1\hk2-api-2.6.1.jar;E:\java\.m2\repository\org\glassfish\hk2\hk2-utils\2.6.1\hk2-utils-2.6.1.jar;E:\java\.m2\repository\javax\xml\bind\jaxb-api\2.3.0\jaxb-api-2.3.0.jar;E:\java\.m2\repository\javax\activation\activation\1.1.1\activation-1.1.1.jar;E:\java\.m2\repository\org\eclipse\jetty\jetty-server\9.4.38.v20210224\jetty-server-9.4.38.v20210224.jar;E:\java\.m2\repository\javax\servlet\javax.servlet-api\3.1.0\javax.servlet-api-3.1.0.jar;E:\java\.m2\repository\org\eclipse\jetty\jetty-http\9.4.38.v20210224\jetty-http-9.4.38.v20210224.jar;E:\java\.m2\repository\org\eclipse\jetty\jetty-io\9.4.38.v20210224\jetty-io-9.4.38.v20210224.jar;E:\java\.m2\repository\org\eclipse\jetty\jetty-servlet\9.4.38.v20210224\jetty-servlet-9.4.38.v20210224.jar;E:\java\.m2\repository\org\eclipse\jetty\jetty-security\9.4.38.v20210224\jetty-security-9.4.38.v20210224.jar;E:\java\.m2\repository\org\eclipse\jetty\jetty-util-ajax\9.4.38.v20210224\jetty-util-ajax-9.4.38.v20210224.jar;E:\java\.m2\repository\org\eclipse\jetty\jetty-servlets\9.4.38.v20210224\jetty-servlets-9.4.38.v20210224.jar;E:\java\.m2\repository\org\eclipse\jetty\jetty-continuation\9.4.38.v20210224\jetty-continuation-9.4.38.v20210224.jar;E:\java\.m2\repository\org\eclipse\jetty\jetty-util\9.4.38.v20210224\jetty-util-9.4.38.v20210224.jar;E:\java\.m2\repository\org\eclipse\jetty\jetty-client\9.4.38.v20210224\jetty-client-9.4.38.v20210224.jar;E:\java\.m2\repository\org\reflections\reflections\0.9.12\reflections-0.9.12.jar;E:\java\.m2\repository\org\apache\maven\maven-artifact\3.6.3\maven-artifact-3.6.3.jar;E:\java\.m2\repository\org\codehaus\plexus\plexus-utils\3.2.1\plexus-utils-3.2.1.jar;E:\java\.m2\repository\org\apache\kafka\connect-json\2.7.1\connect-json-2.7.1.jar;E:\java\.m2\repository\com\fasterxml\jackson\datatype\jackson-datatype-jdk8\2.10.5\jackson-datatype-jdk8-2.10.5.jar;E:\java\.m2\repository\org\apache\kafka\connect-file\2.7.1\connect-file-2.7.1.jar;E:\java\.m2\repository\io\debezium\debezium-connector-mysql\1.6.4.Final\debezium-connector-mysql-1.6.4.Final.jar;E:\java\.m2\repository\io\debezium\debezium-core\1.6.4.Final\debezium-core-1.6.4.Final.jar;E:\java\.m2\repository\com\fasterxml\jackson\core\jackson-core\2.10.5\jackson-core-2.10.5.jar;E:\java\.m2\repository\com\fasterxml\jackson\core\jackson-databind\2.10.5.1\jackson-databind-2.10.5.1.jar;E:\java\.m2\repository\com\fasterxml\jackson\core\jackson-annotations\2.10.5\jackson-annotations-2.10.5.jar;E:\java\.m2\repository\com\fasterxml\jackson\datatype\jackson-datatype-jsr310\2.10.5\jackson-datatype-jsr310-2.10.5.jar;E:\java\.m2\repository\com\google\guava\guava\30.0-jre\guava-30.0-jre.jar;E:\java\.m2\repository\com\google\guava\failureaccess\1.0.1\failureaccess-1.0.1.jar;E:\java\.m2\repository\com\google\guava\listenablefuture\9999.0-empty-to-avoid-conflict-with-guava\listenablefuture-9999.0-empty-to-avoid-conflict-with-guava.jar;E:\java\.m2\repository\io\debezium\debezium-ddl-parser\1.6.4.Final\debezium-ddl-parser-1.6.4.Final.jar;E:\java\.m2\repository\org\antlr\antlr4-runtime\4.8\antlr4-runtime-4.8.jar;E:\java\.m2\repository\com\zendesk\mysql-binlog-connector-java\0.25.3\mysql-binlog-connector-java-0.25.3.jar;E:\java\.m2\repository\mysql\mysql-connector-java\8.0.27\mysql-connector-java-8.0.27.jar;E:\java\.m2\repository\com\esri\geometry\esri-geometry-api\2.2.0\esri-geometry-api-2.2.0.jar;E:\java\.m2\repository\com\zaxxer\HikariCP\4.0.3\HikariCP-4.0.3.jar;E:\java\.m2\repository\org\awaitility\awaitility\4.0.1\awaitility-4.0.1.jar;E:\java\.m2\repository\org\hamcrest\hamcrest\2.1\hamcrest-2.1.jar"org.example.FlinkDemo
SLF4J:Failedtoloadclass"org.slf4j.impl.StaticLoggerBinder".
SLF4J:Defaultingtono-operation (NOP) logger implementation
SLF4J:See http://www.slf4j.org/codes.html#StaticLoggerBinderfor further details.
Exception in thread "main"org.apache.flink.table.api.TableException:Failedtoexecute sql
    at org.apache.flink.table.api.internal.TableEnvironmentImpl.executeInternal(TableEnvironmentImpl.java:867)
    at org.apache.flink.table.api.internal.TableEnvironmentImpl.executeInternal(TableEnvironmentImpl.java:827)
    at org.apache.flink.table.api.internal.TableEnvironmentImpl.executeInternal(TableEnvironmentImpl.java:918)
    at org.apache.flink.table.api.internal.TableEnvironmentImpl.executeSql(TableEnvironmentImpl.java:730)
    at org.example.FlinkDemo.main(FlinkDemo.java:29)Caused by:org.apache.flink.util.FlinkException:Failedtoexecute job 'FlinkDemo-To sink_test'.
    at org.apache.flink.streaming.api.environment.StreamExecutionEnvironment.executeAsync(StreamExecutionEnvironment.java:2203)
    at org.apache.flink.table.planner.delegation.DefaultExecutor.executeAsync(DefaultExecutor.java:95)
    at org.apache.flink.table.api.internal.TableEnvironmentImpl.executeInternal(TableEnvironmentImpl.java:850)...4 more
Caused by:java.lang.RuntimeException:org.apache.flink.runtime.client.JobInitializationException:Could not start the JobMaster.
    at org.apache.flink.util.ExceptionUtils.rethrow(ExceptionUtils.java:321)
    at org.apache.flink.util.function.FunctionUtils.lambda$uncheckedFunction$2(FunctionUtils.java:75)
    at java.util.concurrent.CompletableFuture.uniApply(CompletableFuture.java:616)
    at java.util.concurrent.CompletableFuture$UniApply.tryFire(CompletableFuture.java:591)
    at java.util.concurrent.CompletableFuture$Completion.exec(CompletableFuture.java:457)
    at java.util.concurrent.ForkJoinTask.doExec(ForkJoinTask.java:289)
    at java.util.concurrent.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1067)
    at java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1703)
    at java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:172)Caused by:org.apache.flink.runtime.client.JobInitializationException:Could not start the JobMaster.
    at org.apache.flink.runtime.jobmaster.DefaultJobMasterServiceProcess.lambda$new$0(DefaultJobMasterServiceProcess.java:97)
    at java.util.concurrent.CompletableFuture.uniWhenComplete(CompletableFuture.java:774)
    at java.util.concurrent.CompletableFuture$UniWhenComplete.tryFire(CompletableFuture.java:750)
    at java.util.concurrent.CompletableFuture.postComplete(CompletableFuture.java:488)
    at java.util.concurrent.CompletableFuture$AsyncSupply.run(CompletableFuture.java:1609)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
    at java.lang.Thread.run(Thread.java:750)Caused by:java.util.concurrent.CompletionException:java.lang.RuntimeException:org.apache.flink.runtime.JobException:Cannot instantiate the coordinator for operator Source: source_test[1]->DropUpdateBefore[2]->ConstraintEnforcer[3]->Sink: sink_test[3]
    at java.util.concurrent.CompletableFuture.encodeThrowable(CompletableFuture.java:273)
    at java.util.concurrent.CompletableFuture.completeThrowable(CompletableFuture.java:280)
    at java.util.concurrent.CompletableFuture$AsyncSupply.run(CompletableFuture.java:1606)...3 more
Caused by:java.lang.RuntimeException:org.apache.flink.runtime.JobException:Cannot instantiate the coordinator for operator Source: source_test[1]->DropUpdateBefore[2]->ConstraintEnforcer[3]->Sink: sink_test[3]
    at org.apache.flink.util.ExceptionUtils.rethrow(ExceptionUtils.java:321)
    at org.apache.flink.util.function.FunctionUtils.lambda$uncheckedSupplier$4(FunctionUtils.java:114)
    at java.util.concurrent.CompletableFuture$AsyncSupply.run(CompletableFuture.java:1604)...3 more
Caused by:org.apache.flink.runtime.JobException:Cannot instantiate the coordinator for operator Source: source_test[1]->DropUpdateBefore[2]->ConstraintEnforcer[3]->Sink: sink_test[3]
    at org.apache.flink.runtime.executiongraph.ExecutionJobVertex.initialize(ExecutionJobVertex.java:229)
    at org.apache.flink.runtime.executiongraph.DefaultExecutionGraph.initializeJobVertex(DefaultExecutionGraph.java:901)
    at org.apache.flink.runtime.executiongraph.DefaultExecutionGraph.initializeJobVertices(DefaultExecutionGraph.java:891)
    at org.apache.flink.runtime.executiongraph.DefaultExecutionGraph.attachJobGraph(DefaultExecutionGraph.java:848)
    at org.apache.flink.runtime.executiongraph.DefaultExecutionGraph.attachJobGraph(DefaultExecutionGraph.java:830)
    at org.apache.flink.runtime.executiongraph.DefaultExecutionGraphBuilder.buildGraph(DefaultExecutionGraphBuilder.java:203)
    at org.apache.flink.runtime.scheduler.DefaultExecutionGraphFactory.createAndRestoreExecutionGraph(DefaultExecutionGraphFactory.java:156)
    at org.apache.flink.runtime.scheduler.SchedulerBase.createAndRestoreExecutionGraph(SchedulerBase.java:361)
    at org.apache.flink.runtime.scheduler.SchedulerBase.<init>(SchedulerBase.java:206)
    at org.apache.flink.runtime.scheduler.DefaultScheduler.<init>(DefaultScheduler.java:134)
    at org.apache.flink.runtime.scheduler.DefaultSchedulerFactory.createInstance(DefaultSchedulerFactory.java:152)
    at org.apache.flink.runtime.jobmaster.DefaultSlotPoolServiceSchedulerFactory.createScheduler(DefaultSlotPoolServiceSchedulerFactory.java:119)
    at org.apache.flink.runtime.jobmaster.JobMaster.createScheduler(JobMaster.java:369)
    at org.apache.flink.runtime.jobmaster.JobMaster.<init>(JobMaster.java:346)
    at org.apache.flink.runtime.jobmaster.factories.DefaultJobMasterServiceFactory.internalCreateJobMasterService(DefaultJobMasterServiceFactory.java:123)
    at org.apache.flink.runtime.jobmaster.factories.DefaultJobMasterServiceFactory.lambda$createJobMasterService$0(DefaultJobMasterServiceFactory.java:95)
    at org.apache.flink.util.function.FunctionUtils.lambda$uncheckedSupplier$4(FunctionUtils.java:112)...4 more
Caused by:java.io.StreamCorruptedException: unexpected block data
    at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1685)
    at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:2430)
    at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:2310)
    at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:2212)
    at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1668)
    at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:2430)
    at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:2310)
    at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:2212)
    at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1668)
    at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:2430)
    at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:2310)
    at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:2212)
    at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1668)
    at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:2430)
    at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:2354)
    at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:2212)
    at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1668)
    at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:2430)
    at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:2354)
    at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:2212)
    at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1668)
    at java.io.ObjectInputStream.readArray(ObjectInputStream.java:2118)
    at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1656)
    at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:2430)
    at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:2354)
    at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:2212)
    at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1668)
    at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:2430)
    at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:2354)
    at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:2212)
    at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1668)
    at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:2430)
    at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:2354)
    at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:2212)
    at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1668)
    at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:2430)
    at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:2354)
    at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:2212)
    at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1668)
    at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:2430)
    at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:2354)
    at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:2212)
    at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1668)
    at java.io.ObjectInputStream.readObject(ObjectInputStream.java:502)
    at java.io.ObjectInputStream.readObject(ObjectInputStream.java:460)
    at org.apache.flink.util.InstantiationUtil.deserializeObject(InstantiationUtil.java:617)
    at org.apache.flink.util.InstantiationUtil.deserializeObject(InstantiationUtil.java:602)
    at org.apache.flink.util.InstantiationUtil.deserializeObject(InstantiationUtil.java:589)
    at org.apache.flink.util.SerializedValue.deserializeValue(SerializedValue.java:67)
    at org.apache.flink.runtime.operators.coordination.OperatorCoordinatorHolder.create(OperatorCoordinatorHolder.java:488)
    at org.apache.flink.runtime.executiongraph.ExecutionJobVertex.createOperatorCoordinatorHolder(ExecutionJobVertex.java:286)
    at org.apache.flink.runtime.executiongraph.ExecutionJobVertex.initialize(ExecutionJobVertex.java:223)...20 more

Process finished withexit code 1

标签： mysql flink etl

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基于Flink CDC实时同步数据（MySQL到MySQL）

一、环境

二、准备

三、Flink SQL Client上开发SQL作业

四、使用本机执行环境开发SQL作业

五、远程执行环境开发SQL作业

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