什么是“数据流作业似乎被卡住了，因为在过去1小时内未看到任何工人活动”？

Question

我的数据流作业是从Python的Apache_beam触发的。当运行程序为默认运行器时，此方法已运行，但当运行机为DataFlowRunner时，此操作失败。我想知道某些数据流设置在GCP项目中不正确。

insertId: "18yr612ckq8"  
labels: {
dataflow.googleapis.com/job_id: "2019-12-29_20_13_18-6351782926232365732"   
dataflow.googleapis.com/job_name: "wordcountpy-test"   
dataflow.googleapis.com/region: "us-central1"   
}
logName: "projects/hsbc-9820327-cmbsp54-dev/logs/dataflow.googleapis.com%2Fjob-message"  
 receiveTimestamp: "2019-12-30T05:13:27.146833360Z"  
 resource: {
  labels: {
   job_id: "2019-12-29_20_13_18-6351782926232365732"    
   job_name: "wordcountpy-test"    
   project_id: "488006911152"    
   region: "us-central1"    
   step_id: ""    
  }
  type: "dataflow_step"   
 }
 severity: "ERROR"  
 textPayload: "Workflow failed. Causes: The Dataflow job appears to be stuck because no worker activity has been seen in the last 1h. You can get help with Cloud Dataflow at   https://cloud.google.com/dataflow/support."  
 timestamp: "2019-12-30T05:13:25.787782564Z" enter code here