2

我正在尝试将 Flink 有状态功能部署为 flink jar，并按照此处的说明进行操作。但是，我收到错误消息，即使在我的 pom.xml 中添加了依赖项后，在 jar 中也找不到程序入口点类。

跑步：

bin/flink run -c org.apache.flink.statefun.flink.core.StatefulFunctionsJob flink-statefun/statefun-examples/statefun-greeter-example/target/statefun-greeter-example-2.3-SNAPSHOT.jar

产生以下错误：

org.apache.flink.client.program.ProgramInvocationException: The program's entry point class 'org.apache.flink.statefun.flink.core.StatefulFunctionsJob' was not found in the jar file.
    at org.apache.flink.client.program.PackagedProgram.loadMainClass(PackagedProgram.java:389)
    at org.apache.flink.client.program.PackagedProgram.<init>(PackagedProgram.java:139)
    at org.apache.flink.client.program.PackagedProgram.<init>(PackagedProgram.java:61)
    at org.apache.flink.client.program.PackagedProgram$Builder.build(PackagedProgram.java:557)
    at org.apache.flink.client.cli.CliFrontend.buildProgram(CliFrontend.java:726)
    at org.apache.flink.client.cli.CliFrontend.getPackagedProgram(CliFrontend.java:242)
    at org.apache.flink.client.cli.CliFrontend.run(CliFrontend.java:223)
    at org.apache.flink.client.cli.CliFrontend.parseParameters(CliFrontend.java:916)
    at org.apache.flink.client.cli.CliFrontend.lambda$main$10(CliFrontend.java:992)
    at org.apache.flink.runtime.security.contexts.NoOpSecurityContext.runSecured(NoOpSecurityContext.java:30)
    at org.apache.flink.client.cli.CliFrontend.main(CliFrontend.java:992)
Caused by: java.lang.ClassNotFoundException: org.apache.flink.statefun.flink.core.StatefulFunctionsJob
    at java.net.URLClassLoader.findClass(URLClassLoader.java:382)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:418)
    at org.apache.flink.util.FlinkUserCodeClassLoader.loadClassWithoutExceptionHandling(FlinkUserCodeClassLoader.java:61)
    at org.apache.flink.util.ChildFirstClassLoader.loadClassWithoutExceptionHandling(ChildFirstClassLoader.java:65)
    at org.apache.flink.util.FlinkUserCodeClassLoader.loadClass(FlinkUserCodeClassLoader.java:48)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:351)
    at java.lang.Class.forName0(Native Method)
    at java.lang.Class.forName(Class.java:348)
    at org.apache.flink.client.program.PackagedProgram.loadMainClass(PackagedProgram.java:387)
    ... 10 more

这是我的 pom.xml

<?xml version="1.0" encoding="UTF-8"?>
<!--
Licensed to the Apache Software Foundation (ASF) under one
or more contributor license agreements.  See the NOTICE file
distributed with this work for additional information
regarding copyright ownership.  The ASF licenses this file
to you under the Apache License, Version 2.0 (the
"License"); you may not use this file except in compliance
with the License.  You may obtain a copy of the License at
  http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing,
software distributed under the License is distributed on an
"AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
KIND, either express or implied.  See the License for the
specific language governing permissions and limitations
under the License.
-->
<project xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xmlns="http://maven.apache.org/POM/4.0.0"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <parent>
        <artifactId>statefun-examples</artifactId>
        <groupId>org.apache.flink</groupId>
        <version>2.3-SNAPSHOT</version>
        <relativePath>..</relativePath>
    </parent>
    <modelVersion>4.0.0</modelVersion>

    <artifactId>statefun-greeter-example</artifactId>

    <dependencies>
        
        <dependency>
            <groupId>org.apache.flink</groupId>
            <artifactId>statefun-sdk</artifactId>
            <version>${project.version}</version>
        </dependency>
        <dependency>
            <groupId>org.apache.flink</groupId>
            <artifactId>statefun-kafka-io</artifactId>
            <version>${project.version}</version>
        </dependency>

        <dependency>
            <groupId>org.apache.flink</groupId>
            <artifactId>statefun-flink-core</artifactId>
            <version>${project.version}</version>
            <exclusions>
                <!-- The following exclusion is needed since this artifacts pulls two different versions
                     of slf4j, and thus failing the maven convergence plugging.
                 -->
                <exclusion>
                    <groupId>org.slf4j</groupId>
                    <artifactId>slf4j-api</artifactId>
                </exclusion>
                <exclusion>
                    <groupId>com.google.protobuf</groupId>
                    <artifactId>protobuf-java</artifactId>
                </exclusion>
            </exclusions>
        </dependency>
        <dependency>
            <groupId>org.apache.flink</groupId>
            <artifactId>statefun-flink-distribution</artifactId>
            <version>${project.version}</version>
            <exclusions>
                <!-- The following exclusion is needed since this artifacts pulls two different versions
                     of slf4j, and thus failing the maven convergence plugging.
                 -->
                <exclusion>
                    <groupId>org.slf4j</groupId>
                    <artifactId>slf4j-api</artifactId>
                </exclusion>
                <exclusion>
                    <groupId>com.google.protobuf</groupId>
                    <artifactId>protobuf-java</artifactId>
                </exclusion>
            </exclusions>
        </dependency>
        <dependency>
            <groupId>com.google.protobuf</groupId>
            <artifactId>protobuf-java</artifactId>
            <version>3.8.0</version>
        </dependency>
        
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>com.github.os72</groupId>
                <artifactId>protoc-jar-maven-plugin</artifactId>
                <version>${protoc-jar-maven-plugin.version}</version>
            </plugin>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-javadoc-plugin</artifactId>
                <configuration>
                    <excludePackageNames>org.apache.flink.statefun.examples.greeter.generated</excludePackageNames>
                </configuration>
            </plugin>
        </plugins>
    </build>
    
</project>

pom 文件的原始版本可以在这里找到。似乎添加额外的依赖项statefun-flink-distribution没有效果。有什么建议么？

4

1 回答 1

0

当您提交 Flink 作业时，您还需要提供该作业的依赖项。在这种情况下，数据流 sdk jar。您可以使用shade 插件创建一个具有依赖项的 jar 。

于 2020-12-26T20:29:10.250 回答