Question

所以我在Apache Beam中实现了这个Job，最终在Dataflow中运行它。所以我使用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

我用以下代码运行我的代码：

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

如果我使用Direct更改Dataflow，那么我的代码将运行并运行。

崩溃的地方是：

Pipeline pipeline = Pipeline.create(options);

我的选择＆＃39;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＆＃39; MemoryTestExtractOptions＆＃39;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);
}

错误抱怨＆＃39; DataflowPipelineOptions.setUserAgent＆＃39;但我没有打电话给我，我检查了我的选择，他们都很好。我错过了Dataflow的特定内容吗？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原型生成项目，则可以将-Pdataflow-runner添加到maven命令行。

在数据流：https://beam.apache.org/get-started/quickstart-java/

下的Beam快速入门说明中有一个示例

Answer 2

发现问题。我的pom.xml指定了dataflow-runner的版本，而不是匹配 $ {beam.version}

我改变了，它就像一个魅力。

感谢您指出正确方向的提示

DataflowRunner无法正常工作

2 个答案: