java - DataflowRunner 不工作

Question

因此，我在 Apache Beam 中实现此作业，最终在 Dataflow 中运行它。因此，我使用 Direct Runner 进行了测试，但是当我将其更改为 Dataflow Runner 时，它崩溃了:

java.lang.reflect.InvocationTargetException
    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.mojo.exec.ExecJavaMojo$1.run (ExecJavaMojo.java:293)
    at java.lang.Thread.run (Thread.java:748)
Caused by: java.lang.RuntimeException: Failed to construct instance from factory method DataflowRunner#fromOptions(interface org.apache.beam.sdk.options.PipelineOptions)
    at org.apache.beam.sdk.util.InstanceBuilder.buildFromMethod (InstanceBuilder.java:233)
    at org.apache.beam.sdk.util.InstanceBuilder.build (InstanceBuilder.java:162)
    at org.apache.beam.sdk.PipelineRunner.fromOptions (PipelineRunner.java:52)
    at org.apache.beam.sdk.Pipeline.create (Pipeline.java:142)
    at com.lf.myApacheBeam.MemoryTestProject.MemoryTest.main (MemoryTest.java:171)
    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.mojo.exec.ExecJavaMojo$1.run (ExecJavaMojo.java:293)
    at java.lang.Thread.run (Thread.java:748)
Caused by: java.lang.reflect.InvocationTargetException
    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.apache.beam.sdk.util.InstanceBuilder.buildFromMethod (InstanceBuilder.java:222)
    at org.apache.beam.sdk.util.InstanceBuilder.build (InstanceBuilder.java:162)
    at org.apache.beam.sdk.PipelineRunner.fromOptions (PipelineRunner.java:52)
    at org.apache.beam.sdk.Pipeline.create (Pipeline.java:142)
    at com.lf.myApacheBeam.MemoryTestProject.MemoryTest.main (MemoryTest.java:171)
    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.mojo.exec.ExecJavaMojo$1.run (ExecJavaMojo.java:293)
    at java.lang.Thread.run (Thread.java:748)
Caused by: java.lang.NoSuchMethodError: org.apache.beam.runners.dataflow.options.DataflowPipelineOptions.setUserAgent(Ljava/lang/String;)V
    at org.apache.beam.runners.dataflow.DataflowRunner.fromOptions (DataflowRunner.java:304)
    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.apache.beam.sdk.util.InstanceBuilder.buildFromMethod (InstanceBuilder.java:222)
    at org.apache.beam.sdk.util.InstanceBuilder.build (InstanceBuilder.java:162)
    at org.apache.beam.sdk.PipelineRunner.fromOptions (PipelineRunner.java:52)
    at org.apache.beam.sdk.Pipeline.create (Pipeline.java:142)
    at com.lf.myApacheBeam.MemoryTestProject.MemoryTest.main (MemoryTest.java:171)
    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.mojo.exec.ExecJavaMojo$1.run (ExecJavaMojo.java:293)
    at java.lang.Thread.run (Thread.java:748)
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 7.287 s
[INFO] Finished at: 2018-01-30T14:32:51-06:00
[INFO] Final Memory: 38M/376M
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal org.codehaus.mojo:exec-maven-plugin:1.4.0:java (default-cli) on project word-count-beam: An exception occured while executing the Java class. null: InvocationTargetException: Failed to construct instance from factory method DataflowRunner#fromOptions(interface org.apache.beam.sdk.options.PipelineOptions): org.apache.beam.runners.dataflow.options.DataflowPipelineOptions.setUserAgent(Ljava/lang/String;)V -> [Help 1]
[ERROR] 
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR] 
[ERROR] For more information about the errors and possible solutions, please read the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/MojoExecutionException

我运行我的代码:

 mvn compile exec:java -Dexec.mainClass=com.lf.myApacheBeam.MemoryTestProject.MemoryTest -Dexec.args="--runner=DataflowRunner"

如果我使用 Direct 更改数据流，那么我的代码可以正常运行。

崩溃的行是:

Pipeline pipeline = Pipeline.create(options);

我的“选项”声明为:

MemoryTestExtractOptions options = PipelineOptionsFactory.fromArgs(args)
        .withValidation()
        .as(MemoryTestExtractOptions.class);
    options.setStreaming(true);
    //options.setRunner(DataflowRunner.class);
    options.setTempLocation("gs://blahblahblah/temp/");
    options.setBigQuerySchema(TestResultToRowConverter.getSchema());

最后我的界面“MemoryTestExtractOptions”是:

  private interface MemoryTestExtractOptions
      extends Options, BigQueryTableOptionsForMemoryTest, StreamingOptions, PubsubTopicAndSubscriptionOptions, DataflowPipelineOptions//, DataflowPipelineOptions
       {


    @Description("BigQuery table to write to, specified as "
        + "<project_id>:<dataset_id>.<table_id>. The dataset must already exist.")
    String getOutput();
    void setOutput(String value);
}

该错误提示“DataflowPipelineOptions.setUserAgent”，但我没有调用它，我检查了我的选项，它们都格式良好。我是否遗漏了 Dataflow 的特定内容？谢谢。

Answer 1

请确保您的 pom.xml 列出 org.apache.beam:beam-runners-google-cloud-dataflow-java工件作为依赖项。如果您使用 beam-sdks-java-maven-archetypes-examples 生成项目原型(prototype)，您可以将 -Pdataflow-runner 添加到您的 Maven 命令行。

数据流下的 Beam 快速入门说明中有一个这样的示例:https://beam.apache.org/get-started/quickstart-java/