Flink使用

nsa652232025-01-05 15:46

Window下启动支持

下载或复制老版本的放在bin目录下即可；

flink.bat

@echo off
setlocal
 
SET bin=%~dp0
SET FLINK_HOME=%bin%..
SET FLINK_LIB_DIR=%FLINK_HOME%\lib
SET FLINK_PLUGINS_DIR=%FLINK_HOME%\plugins
 
SET JVM_ARGS=-Xmx512m
 
SET FLINK_JM_CLASSPATH=%FLINK_LIB_DIR%\*
 
java %JVM_ARGS% -cp "%FLINK_JM_CLASSPATH%"; org.apache.flink.client.cli.CliFrontend %*
 
endlocal

start-cluster.bat

@echo off
setlocal EnableDelayedExpansion
 
SET bin=%~dp0
SET FLINK_HOME=%bin%..
SET FLINK_LIB_DIR=%FLINK_HOME%\lib
SET FLINK_PLUGINS_DIR=%FLINK_HOME%\plugins
SET FLINK_CONF_DIR=%FLINK_HOME%\conf
SET FLINK_LOG_DIR=%FLINK_HOME%\log
 
SET JVM_ARGS=-Xms1024m -Xmx1024m
 
SET FLINK_CLASSPATH=%FLINK_LIB_DIR%\*
 
SET logname_jm=flink-%username%-jobmanager.log
SET logname_tm=flink-%username%-taskmanager.log
SET log_jm=%FLINK_LOG_DIR%\%logname_jm%
SET log_tm=%FLINK_LOG_DIR%\%logname_tm%
SET outname_jm=flink-%username%-jobmanager.out
SET outname_tm=flink-%username%-taskmanager.out
SET out_jm=%FLINK_LOG_DIR%\%outname_jm%
SET out_tm=%FLINK_LOG_DIR%\%outname_tm%
 
SET log_setting_jm=-Dlog.file="%log_jm%" -Dlogback.configurationFile=file:"%FLINK_CONF_DIR%/logback.xml" -Dlog4j.configuration=file:"%FLINK_CONF_DIR%/log4j.properties"
SET log_setting_tm=-Dlog.file="%log_tm%" -Dlogback.configurationFile=file:"%FLINK_CONF_DIR%/logback.xml" -Dlog4j.configuration=file:"%FLINK_CONF_DIR%/log4j.properties"
 
:: Log rotation (quick and dirty)
CD "%FLINK_LOG_DIR%"
for /l %%x in (5, -1, 1) do ( 
SET /A y = %%x+1 
RENAME "%logname_jm%.%%x" "%logname_jm%.!y!" 2> nul
RENAME "%logname_tm%.%%x" "%logname_tm%.!y!" 2> nul
RENAME "%outname_jm%.%%x" "%outname_jm%.!y!"  2> nul
RENAME "%outname_tm%.%%x" "%outname_tm%.!y!"  2> nul
)
RENAME "%logname_jm%" "%logname_jm%.0"  2> nul
RENAME "%logname_tm%" "%logname_tm%.0"  2> nul
RENAME "%outname_jm%" "%outname_jm%.0"  2> nul
RENAME "%outname_tm%" "%outname_tm%.0"  2> nul
DEL "%logname_jm%.6"  2> nul
DEL "%logname_tm%.6"  2> nul
DEL "%outname_jm%.6"  2> nul
DEL "%outname_tm%.6"  2> nul
 
for %%X in (java.exe) do (set FOUND=%%~$PATH:X)
if not defined FOUND (
    echo java.exe was not found in PATH variable
    goto :eof
)
 
echo Starting a local cluster with one JobManager process and one TaskManager process.
 
echo You can terminate the processes via CTRL-C in the spawned shell windows.
 
echo Web interface by default on http://localhost:8081/.
 
start java %JVM_ARGS% %log_setting_jm% -cp "%FLINK_CLASSPATH%"; org.apache.flink.runtime.entrypoint.StandaloneSessionClusterEntrypoint --configDir "%FLINK_CONF_DIR%" > "%out_jm%" 2>&1
start java %JVM_ARGS% %log_setting_tm% -cp "%FLINK_CLASSPATH%"; org.apache.flink.runtime.taskexecutor.TaskManagerRunner --configDir "%FLINK_CONF_DIR%" > "%out_tm%" 2>&1
 
endlocal

Flink实战(Java/MongoDB/Mysql)

    <properties>
        <java.version>1.8</java.version>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
        <spring-boot.version>2.6.13</spring-boot.version>
        <flink-version>1.14.6</flink-version>
    </properties>
    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>org.apache.flink</groupId>
            <artifactId>flink-java</artifactId>
            <version>${flink-version}</version>
        </dependency>
        <dependency>
            <groupId>org.apache.flink</groupId>
            <artifactId>flink-streaming-java_2.12</artifactId>
            <version>${flink-version}</version>
        </dependency>
        <dependency>
            <groupId>org.apache.flink</groupId>
            <artifactId>flink-clients_2.12</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_2.12</artifactId>
            <version>${flink-version}</version>
        </dependency>
        <!-- lombok -->
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <version>1.18.30</version>
            <optional>true</optional>
        </dependency>
        <!-- mongodb -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-data-mongodb</artifactId>
        </dependency>
        <dependency>
            <groupId>org.apache.flink</groupId>
            <artifactId>flink-connector-mongodb</artifactId>
            <version>1.1.0-1.18</version>
        </dependency>
 
        <dependency>
            <groupId>com.alibaba.fastjson2</groupId>
            <artifactId>fastjson2</artifactId>
            <version>2.0.50</version>
        </dependency>
 
        <!-- Spring Boot Starter MyBatis -->
        <dependency>
            <groupId>com.baomidou</groupId>
            <artifactId>mybatis-plus-boot-starter</artifactId>
            <version>3.5.6</version>
        </dependency>
 
        <!-- MySQL Driver -->
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
        </dependency>
    </dependencies>

Flink CDC在MongoDB的副本集（replica set）上使用了changeStream操作，而该操作仅支持副本集。如果你的MongoDB是单个实例（standalone），则不支持changeStream操作。

MongoDB开启副本集（Replica Set），否则代码运行会报错。

Flink报错记录

[20210910 10:16:40.107] [DEBUG] [main] [StreamGraph.java:391][addOperator] Vertex: 2
java.lang.IllegalStateException: No ExecutorFactory found to execute the application.
        at org.apache.flink.core.execution.DefaultExecutorServiceLoader.getExecutorFactory(DefaultExecutorServiceLoader.java:88)
        at org.apache.flink.streaming.api.environment.StreamExecutionEnvironment.executeAsync(StreamExecutionEnvironment.java:1947)
        at org.apache.flink.streaming.api.environment.StreamExecutionEnvironment.execute(StreamExecutionEnvironment.java:1848)
        at org.apache.flink.streaming.api.environment.LocalStreamEnvironment.execute(LocalStreamEnvironment.java:69)
        at org.apache.flink.streaming.api.environment.StreamExecutionEnvironment.execute(StreamExecutionEnvironment.java:1834)
        at com.example.Fink_Kafka_Demo.main(Fink_Kafka_Demo.java:27)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:498)
        at org.springframework.boot.loader.MainMethodRunner.run(MainMethodRunner.java:49)
        at org.springframework.boot.loader.Launcher.launch(Launcher.java:108)
        at org.springframework.boot.loader.Launcher.launch(Launcher.java:58)
        at org.springframework.boot.loader.JarLauncher.main(JarLauncher.java:88)

添加

            <!-- https://mvnrepository.com/artifact/org.apache.flink/flink-clients -->
        <dependency>
            <groupId>org.apache.flink</groupId>
            <artifactId>flink-clients_2.12</artifactId>
            <version>${flink-version}</version>
        </dependency>

[20210910 10:20:02.172] [INFO] [main] [RestServerEndpoint.java:139][start] Starting rest endpoint.
[20210910 10:20:02.203] [DEBUG] [main] [DispatcherRestEndpoint.java:124][initializeWebSubmissionHandlers] Failed to load web based job submission extension.
org.apache.flink.util.FlinkException: The module flink-runtime-web could not be found in the class path. Please add this jar in order to enable web based job submission.
        at org.apache.flink.runtime.webmonitor.WebMonitorUtils.loadWebSubmissionExtension(WebMonitorUtils.java:197)
        at org.apache.flink.runtime.dispatcher.DispatcherRestEndpoint.initializeWebSubmissionHandlers(DispatcherRestEndpoint.java:112)
        at org.apache.flink.runtime.webmonitor.WebMonitorEndpoint.initializeHandlers(WebMonitorEndpoint.java:268)
        at org.apache.flink.runtime.dispatcher.DispatcherRestEndpoint.initializeHandlers(DispatcherRestEndpoint.java:89)
        at org.apache.flink.runtime.rest.RestServerEndpoint.start(RestServerEndpoint.java:144)
        at org.apache.flink.runtime.entrypoint.component.DefaultDispatcherResourceManagerComponentFactory.create(DefaultDispatcherResourceManagerComponentFactory.java:172)
        at org.apache.flink.runtime.minicluster.MiniCluster.createDispatcherResourceManagerComponents(MiniCluster.java:463)
        at org.apache.flink.runtime.minicluster.MiniCluster.setupDispatcherResourceManagerComponents(MiniCluster.java:422)
        at org.apache.flink.runtime.minicluster.MiniCluster.start(MiniCluster.java:366)
        at org.apache.flink.client.program.PerJobMiniClusterFactory.submitJob(PerJobMiniClusterFactory.java:75)
        at org.apache.flink.client.deployment.executors.LocalExecutor.execute(LocalExecutor.java:85)
        at org.apache.flink.streaming.api.environment.StreamExecutionEnvironment.executeAsync(StreamExecutionEnvironment.java:1957)
        at org.apache.flink.streaming.api.environment.StreamExecutionEnvironment.execute(StreamExecutionEnvironment.java:1848)
        at org.apache.flink.streaming.api.environment.LocalStreamEnvironment.execute(LocalStreamEnvironment.java:69)
        at org.apache.flink.streaming.api.environment.StreamExecutionEnvironment.execute(StreamExecutionEnvironment.java:1834)
        at com.example.Fink_Kafka_Demo.main(Fink_Kafka_Demo.java:27)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:498)
        at org.springframework.boot.loader.MainMethodRunner.run(MainMethodRunner.java:49)
        at org.springframework.boot.loader.Launcher.launch(Launcher.java:108)
        at org.springframework.boot.loader.Launcher.launch(Launcher.java:58)
        at org.springframework.boot.loader.JarLauncher.main(JarLauncher.java:88)
[20210910 10:20:02.535] [DEBUG] [main] [InternalLoggerFactory.java:45][newDefaultFactory] Using SLF4J as the default logging framework
[20210910 10:20:02.536] [DEBUG] [main] [InternalThreadLocalMap.java:56][<clinit>] -Dio.netty.threadLocalMap.stringBuilder.initialSize: 1024

添加

<!-- https://mvnrepository.com/artifact/org.apache.flink/flink-runtime-web -->
<dependency>
    <groupId>org.apache.flink</groupId>
    <artifactId>flink-runtime-web_2.12</artifactId>
    <version>${flink-version}</version>
</dependency>
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