1.问题描述

        在idea中运行flink job程序出现如下错误：

Exception in thread "main" 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:2085)
    at org.apache.flink.streaming.api.environment.StreamExecutionEnvironment.execute(StreamExecutionEnvironment.java:1983)
    at org.apache.flink.streaming.api.environment.LocalStreamEnvironment.execute(LocalStreamEnvironment.java:68)
    at org.apache.flink.streaming.api.environment.StreamExecutionEnvironment.execute(StreamExecutionEnvironment.java:1969)
    at test.ReadTextDemo.main(ReadTextDemo.java:19)

2.问题分析

        程序代码如下；

<dependencies><dependency><groupId>org.apache.flink</groupId><artifactId>flink-streaming-java</artifactId><version>${flink.version}</version></dependency><dependency><groupId>mysql</groupId><artifactId>mysql-connector-java</artifactId><version>5.1.12</version></dependency>
</dependencies>

package test;import org.apache.flink.api.java.io.TextInputFormat;
import org.apache.flink.streaming.api.datastream.DataStreamSource;
import org.apache.flink.streaming.api.environment.StreamExecutionEnvironment;/*** @Description* @Author XXX* @Date 2024/5/23* @Version 1.0*/
public class ReadTextDemo {public static void main(String[] args) throws Exception {StreamExecutionEnvironment env = StreamExecutionEnvironment.getExecutionEnvironment();TextInputFormat textInputFormat = new TextInputFormat(null);DataStreamSource<String> source = env.readFile(textInputFormat, "D:\\datatest\\readtext.txt");source.print();env.execute("readText test");}
}

        代码比较简单，应该没问题，因此不用分析。        

        从报错信息可以看出，程序没有找到执行器工厂（ExecutorFactory）来执行应用程序中的任务，网上查询了下，出现该报错的原因有以下几个：

        参考：no executorfactory found to execute the application_慕课手记

        因为改flink 程序没有什么配置，因此可以排除1、3，那最有可能得原因就是2，缺少pom依赖，通过在flink官网可知：

        所以应该是缺少flink-clients依赖，加上pom依赖，问题得到解决：

 <dependency><groupId>org.apache.flink</groupId><artifactId>flink-clients</artifactId><version>${flink.version}</version>
</dependency>