Question

我尝试在Linux服务器上使用Maven和Java运行Spark程序。而且我一遍又一遍地遇到相同的错误：

执行Java类时发生了异常。 null：InterruptedException

以及 java.lang.IllegalThreadStateException

Java版本：OpenJDK版本“ 1.8.0_212”

Maven版本：Apache Maven 3.6.1

1。首先，我创建了一个类SimpleApp.java

2。然后，我生成了Maven所需的文件层次结构并创建了pom.xml文件

3。然后编译Maven包：$mvn package

4。成功编译之后，我尝试执行程序：

$ mvn exec:java -Dexec.mainClass="SimpleApp"

出现问题的地方。它给了我一些我不知道如何处理，甚至不知道为什么会发生的异常。

因为在IntellijIdea中运行了完全相同的代码后，所有代码都可以正常工作。

5。这是我得到的输出：

    at java.lang.ThreadGroup.destroy (ThreadGroup.java:778)
    at org.codehaus.mojo.exec.ExecJavaMojo.execute (ExecJavaMojo.java:321)
    at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo (DefaultBuildPluginManager.java:137)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:210)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:156)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:148)
    at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject (LifecycleModuleBuilder.java:117)
    at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject (LifecycleModuleBuilder.java:81)
    at org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build (SingleThreadedBuilder.java:56)
    at org.apache.maven.lifecycle.internal.LifecycleStarter.execute (LifecycleStarter.java:128)
    at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:305)
    at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:192)
    at org.apache.maven.DefaultMaven.execute (DefaultMaven.java:105)
    at org.apache.maven.cli.MavenCli.execute (MavenCli.java:956)
    at org.apache.maven.cli.MavenCli.doMain (MavenCli.java:288)
    at org.apache.maven.cli.MavenCli.main (MavenCli.java:192)
    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.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced (Launcher.java:282)
    at org.codehaus.plexus.classworlds.launcher.Launcher.launch (Launcher.java:225)
    at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode (Launcher.java:406)
    at org.codehaus.plexus.classworlds.launcher.Launcher.main (Launcher.java:347)
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time:  22.483 s
[INFO] Finished at: 2019-05-04T17:20:52Z
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal org.codehaus.mojo:exec-maven-plugin:1.6.0:java (default-cli) on project simple-project: An exception occured while executing the Java class. null: InterruptedException -> [Help 1]

SimpleApp.java：

import org.apache.spark.api.java.function.Function;
import org.apache.spark.SparkConf;

public class SimpleApp {
  public static void main(String[] args) {
        SparkConf conf = new SparkConf().setAppName("SimpleApp").setMaster("local");
        String logFile="/home/yarikzadinamo/alice.txt";
        JavaSparkContext sc = new JavaSparkContext(conf);
        JavaRDD<String> logData = sc.textFile(logFile).cache();
        long numAs = logData.filter(new Function<String, Boolean>() {
      public Boolean call(String s) { return s.contains("a"); }
    }).count();

    long numBs = logData.filter(new Function<String, Boolean>() {
      public Boolean call(String s) { return s.contains("b"); }
    }).count();
        System.out.println("Lines with a: "+numAs+ ", lines with b: "+numBs);
  }
}

pom.xml：

<project>
  <groupId>edu.berkeley</groupId>
  <artifactId>simple-project</artifactId>
  <modelVersion>4.0.0</modelVersion>
  <name>Simple Project</name>
  <packaging>jar</packaging>
  <version>1.0</version>
  <repositories>
    <repository>
      <id>Akka repository</id>
      <url>http://repo.akka.io/releases</url>
    </repository>
  </repositories>
  <dependencies>
    <dependency> <!-- Spark dependency -->
      <groupId>org.apache.spark</groupId>
      <artifactId>spark-core_2.10</artifactId>
      <version>0.9.0-incubating</version>
    </dependency>
  </dependencies>
</project>

alice.txt： this is just a *.txt file with words

我希望看到其中带有As的单词数以及包含B的单词数。

执行Java类时发生异常。 null：Maven执行期间的InterruptedException

0 个答案: