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[英]ClassNotFoundException when running WordCount example in Eclipse
[英]Error when running the WordCount example pipeline on Dataflow with Eclipse
尝试在Eclipse IDE下使用Dataflow运行WordCount示例管道时,出现以下错误:
Exception in thread "main" 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:55)
at org.apache.beam.sdk.Pipeline.create(Pipeline.java:150)
at com.google.cloud.dataflow.examples.WordCount.main(WordCount.java:178)
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)
... 4 more
Caused by: java.lang.IllegalArgumentException: Missing object or bucket in path: 'gs://mysite-ga-datastreaming-196008-my-bucket/', did you mean: 'gs://some-bucket/mysite-ga-datastreaming-196008-my-bucket'?
at org.apache.beam.sdks.java.extensions.google.cloud.platform.core.repackaged.com.google.common.base.Preconditions.checkArgument(Preconditions.java:383)
at org.apache.beam.sdk.extensions.gcp.storage.GcsPathValidator.verifyPath(GcsPathValidator.java:77)
at org.apache.beam.sdk.extensions.gcp.storage.GcsPathValidator.validateOutputFilePrefixSupported(GcsPathValidator.java:60)
at org.apache.beam.runners.dataflow.DataflowRunner.fromOptions(DataflowRunner.java:246)
... 9 more
有人认为该错误是由于Java版本引起的,因为Beam不能在Java 9上正常工作。无论如何,我仍在使用Java8。另一方面,其他人则说该错误是原因是您必须在存储桶下提供一个子文件夹作为存储位置。 我已经尝试过,但仍然无法正常工作。
如果有人以前曾遇到过同样的问题,或者可以提供有关该错误的任何建议,我们将不胜感激。
在使用管道之前,您应该在Google Cloud Storage中创建存储桶gs://mysite-ga-datastreaming-196008-my-bucket/
。
嗨,Mangu的建议是正确的。 您仅需要为云存储登台位置分配文件夹而不是存储桶名称。
有关所有详细信息,请参阅我的帖子: 链接
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