基于Flink CDC实时同步数据（MySQL到MySQL）

gyww

17492人浏览 · 2023-04-22 13:27:12

gyww · 2023-04-22 13:27:12 发布

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"?>
<project xmlns="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：

package org.example;

import org.apache.flink.streaming.api.environment.StreamExecutionEnvironment;
import org.apache.flink.table.api.EnvironmentSettings;
import org.apache.flink.table.api.bridge.java.StreamTableEnvironment;

public class FlinkDemo {
    public static void main(String[] args) throws Exception {
        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;");

    }

    public static String sourceDDL() {
        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;
    }

    public static String sinkDDL() {
        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;
    }

    public static String sinkDDLOfSecondDb() {
        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

"C:\Program Files\Java\jdk1.8.0_351\bin\java.exe" "-javaagent:C:\Program Files\JetBrains\IntelliJ IDEA 2022.3.3\lib\idea_rt.jar=53061:C:\Program Files\JetBrains\IntelliJ IDEA 2022.3.3\bin" -Dfile.encoding=UTF-8 -classpath "C:\Program Files\Java\jdk1.8.0_351\jre\lib\charsets.jar;C:\Program Files\Java\jdk1.8.0_351\jre\lib\deploy.jar;C:\Program Files\Java\jdk1.8.0_351\jre\lib\ext\access-bridge-64.jar;C:\Program Files\Java\jdk1.8.0_351\jre\lib\ext\cldrdata.jar;C:\Program Files\Java\jdk1.8.0_351\jre\lib\ext\dnsns.jar;C:\Program Files\Java\jdk1.8.0_351\jre\lib\ext\jaccess.jar;C:\Program Files\Java\jdk1.8.0_351\jre\lib\ext\jfxrt.jar;C:\Program Files\Java\jdk1.8.0_351\jre\lib\ext\localedata.jar;C:\Program Files\Java\jdk1.8.0_351\jre\lib\ext\nashorn.jar;C:\Program Files\Java\jdk1.8.0_351\jre\lib\ext\sunec.jar;C:\Program Files\Java\jdk1.8.0_351\jre\lib\ext\sunjce_provider.jar;C:\Program Files\Java\jdk1.8.0_351\jre\lib\ext\sunmscapi.jar;C:\Program Files\Java\jdk1.8.0_351\jre\lib\ext\sunpkcs11.jar;C:\Program Files\Java\jdk1.8.0_351\jre\lib\ext\zipfs.jar;C:\Program Files\Java\jdk1.8.0_351\jre\lib\javaws.jar;C:\Program Files\Java\jdk1.8.0_351\jre\lib\jce.jar;C:\Program Files\Java\jdk1.8.0_351\jre\lib\jfr.jar;C:\Program Files\Java\jdk1.8.0_351\jre\lib\jfxswt.jar;C:\Program Files\Java\jdk1.8.0_351\jre\lib\jsse.jar;C:\Program Files\Java\jdk1.8.0_351\jre\lib\management-agent.jar;C:\Program Files\Java\jdk1.8.0_351\jre\lib\plugin.jar;C:\Program Files\Java\jdk1.8.0_351\jre\lib\resources.jar;C:\Program Files\Java\jdk1.8.0_351\jre\lib\rt.jar;E:\java\code\FlinkDemo\target\classes;E:\java\.m2\repository\org\apache\flink\flink-java\1.16.1\flink-java-1.16.1.jar;E:\java\.m2\repository\org\apache\flink\flink-core\1.16.1\flink-core-1.16.1.jar;E:\java\.m2\repository\org\apache\flink\flink-annotations\1.16.1\flink-annotations-1.16.1.jar;E:\java\.m2\repository\org\apache\flink\flink-metrics-core\1.16.1\flink-metrics-core-1.16.1.jar;E:\java\.m2\repository\org\apache\flink\flink-shaded-asm-9\9.2-15.0\flink-shaded-asm-9-9.2-15.0.jar;E:\java\.m2\repository\org\apache\flink\flink-shaded-jackson\2.12.4-15.0\flink-shaded-jackson-2.12.4-15.0.jar;E:\java\.m2\repository\com\esotericsoftware\kryo\kryo\2.24.0\kryo-2.24.0.jar;E:\java\.m2\repository\com\esotericsoftware\minlog\minlog\1.2\minlog-1.2.jar;E:\java\.m2\repository\org\objenesis\objenesis\2.1\objenesis-2.1.jar;E:\java\.m2\repository\commons-collections\commons-collections\3.2.2\commons-collections-3.2.2.jar;E:\java\.m2\repository\org\apache\commons\commons-compress\1.21\commons-compress-1.21.jar;E:\java\.m2\repository\org\apache\commons\commons-lang3\3.3.2\commons-lang3-3.3.2.jar;E:\java\.m2\repository\org\apache\commons\commons-math3\3.6.1\commons-math3-3.6.1.jar;E:\java\.m2\repository\com\twitter\chill-java\0.7.6\chill-java-0.7.6.jar;E:\java\.m2\repository\org\slf4j\slf4j-api\1.7.32\slf4j-api-1.7.32.jar;E:\java\.m2\repository\com\google\code\findbugs\jsr305\1.3.9\jsr305-1.3.9.jar;E:\java\.m2\repository\org\apache\flink\flink-shaded-force-shading\15.0\flink-shaded-force-shading-15.0.jar;E:\java\.m2\repository\org\apache\flink\flink-clients\1.16.1\flink-clients-1.16.1.jar;E:\java\.m2\repository\org\apache\flink\flink-runtime\1.16.1\flink-runtime-1.16.1.jar;E:\java\.m2\repository\org\apache\flink\flink-rpc-core\1.16.1\flink-rpc-core-1.16.1.jar;E:\java\.m2\repository\org\apache\flink\flink-rpc-akka-loader\1.16.1\flink-rpc-akka-loader-1.16.1.jar;E:\java\.m2\repository\org\apache\flink\flink-queryable-state-client-java\1.16.1\flink-queryable-state-client-java-1.16.1.jar;E:\java\.m2\repository\org\apache\flink\flink-hadoop-fs\1.16.1\flink-hadoop-fs-1.16.1.jar;E:\java\.m2\repository\commons-io\commons-io\2.11.0\commons-io-2.11.0.jar;E:\java\.m2\repository\org\apache\flink\flink-shaded-netty\4.1.70.Final-15.0\flink-shaded-netty-4.1.70.Final-15.0.jar;E:\java\.m2\repository\org\apache\flink\flink-shaded-zookeeper-3\3.5.9-15.0\flink-shaded-zookeeper-3-3.5.9-15.0.jar;E:\java\.m2\repository\org\javassist\javassist\3.24.0-GA\javassist-3.24.0-GA.jar;E:\java\.m2\repository\org\xerial\snappy\snappy-java\1.1.8.3\snappy-java-1.1.8.3.jar;E:\java\.m2\repository\org\lz4\lz4-java\1.8.0\lz4-java-1.8.0.jar;E:\java\.m2\repository\org\apache\flink\flink-optimizer\1.16.1\flink-optimizer-1.16.1.jar;E:\java\.m2\repository\commons-cli\commons-cli\1.5.0\commons-cli-1.5.0.jar;E:\java\.m2\repository\org\apache\flink\flink-streaming-java\1.16.1\flink-streaming-java-1.16.1.jar;E:\java\.m2\repository\org\apache\flink\flink-file-sink-common\1.16.1\flink-file-sink-common-1.16.1.jar;E:\java\.m2\repository\org\apache\flink\flink-shaded-guava\30.1.1-jre-15.0\flink-shaded-guava-30.1.1-jre-15.0.jar;E:\java\.m2\repository\org\apache\flink\flink-table-api-java-bridge\1.16.1\flink-table-api-java-bridge-1.16.1.jar;E:\java\.m2\repository\org\apache\flink\flink-table-api-java\1.16.1\flink-table-api-java-1.16.1.jar;E:\java\.m2\repository\org\apache\flink\flink-table-api-bridge-base\1.16.1\flink-table-api-bridge-base-1.16.1.jar;E:\java\.m2\repository\org\apache\flink\flink-table-planner-loader\1.16.1\flink-table-planner-loader-1.16.1.jar;E:\java\.m2\repository\org\apache\flink\flink-table-runtime\1.16.1\flink-table-runtime-1.16.1.jar;E:\java\.m2\repository\org\apache\flink\flink-table-common\1.16.1\flink-table-common-1.16.1.jar;E:\java\.m2\repository\com\ibm\icu\icu4j\67.1\icu4j-67.1.jar;E:\java\.m2\repository\org\apache\flink\flink-cep\1.16.1\flink-cep-1.16.1.jar;E:\java\.m2\repository\org\apache\flink\flink-connector-base\1.16.1\flink-connector-base-1.16.1.jar;E:\java\.m2\repository\org\apache\flink\flink-connector-jdbc\1.16.1\flink-connector-jdbc-1.16.1.jar;E:\java\.m2\repository\com\ververica\flink-connector-mysql-cdc\2.3.0\flink-connector-mysql-cdc-2.3.0.jar;E:\java\.m2\repository\com\ververica\flink-connector-debezium\2.3.0\flink-connector-debezium-2.3.0.jar;E:\java\.m2\repository\io\debezium\debezium-api\1.6.4.Final\debezium-api-1.6.4.Final.jar;E:\java\.m2\repository\io\debezium\debezium-embedded\1.6.4.Final\debezium-embedded-1.6.4.Final.jar;E:\java\.m2\repository\org\apache\kafka\connect-api\2.7.1\connect-api-2.7.1.jar;E:\java\.m2\repository\org\apache\kafka\kafka-clients\2.7.1\kafka-clients-2.7.1.jar;E:\java\.m2\repository\com\github\luben\zstd-jni\1.4.5-6\zstd-jni-1.4.5-6.jar;E:\java\.m2\repository\javax\ws\rs\javax.ws.rs-api\2.1.1\javax.ws.rs-api-2.1.1.jar;E:\java\.m2\repository\org\apache\kafka\connect-runtime\2.7.1\connect-runtime-2.7.1.jar;E:\java\.m2\repository\org\apache\kafka\kafka-tools\2.7.1\kafka-tools-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: Failed to load class "org.slf4j.impl.StaticLoggerBinder".
SLF4J: Defaulting to no-operation (NOP) logger implementation
SLF4J: See http://www.slf4j.org/codes.html#StaticLoggerBinder for further details.
Exception in thread "main" org.apache.flink.table.api.TableException: Failed to execute 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: Failed to execute job 'Flink Demo - 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 with exit code 1

GitCode 开源社区

旨在为数千万中国开发者提供一个无缝且高效的云端环境，以支持学习、使用和贡献开源项目。

更多推荐

[转载]在Windows环境下安装GNU Radio

转自：在Windows环境下安装GNURadio_恐弱智_新浪博客GNU Radio是用Python开发的，大部分开源的工程能够在Linux环境下运行良好，而Windows下却运行的很勉强，而且安装配置都很复杂。GNU Radio算是个例外了，不光提供了Windows的二进制安装，还有比较详细的说明。我是Python小白，所以折腾了好久才弄好，特意记录下来，免得以后再装还折腾。GNU Radio的

GitCode 开源社区

centOS 8 使用dnf安装Docker

DNF是什么？CentOS 8使用YUM软件包管理器版本v4.0.4。现在，该版本使用DNF(已删除YUM)。DNF是软件包管理器。它会在Linux发行版上安装，执行更新并删除软件包。使用DNF安装Docker跳过具有损坏依赖性的程序包一个有效的解决方案是使您的CentOS 8系统使用以下--nobest命令安装最符合条件的版本：sudo dnf install docker...

GitCode 开源社区

定时同步数据库表(mysql+linux+crontab)

sync.sh里面的参数需要改变，ip/username/password/database/tablesync.sh#!/bin/sh# Please change the IP and password of the data source db.# Then change the table name.filename=/home/nington/db/$(date +%Y-%m