TheNeuralBit commented on issue #22709:
URL: https://github.com/apache/beam/issues/22709#issuecomment-1224912231

   I tried running sql_taxi on FlinkRunner (`python -m 
apache_beam.examples.sql_taxi --output 'projects/foo/topics/bar' --runner 
FlinkRunner`) but got the following error:
   ```
   INFO:apache_beam.utils.subprocess_server:java.lang.IllegalArgumentException: 
PCollectionNodes [PCollectionNode{id=ref_PCollection_PCollection_2, 
PCollection=unique_name: "19ReadFromPubSub/Read.None"                           
       
   INFO:apache_beam.utils.subprocess_server:coder_id: "ref_Coder_BytesCoder_3"  
                                                                                
                                                                           
   INFO:apache_beam.utils.subprocess_server:is_bounded: UNBOUNDED               
                                                                                
                                                                           
   INFO:apache_beam.utils.subprocess_server:windowing_strategy_id: 
"ref_Windowing_Windowing_2"                                                     
                                                                                
        
   INFO:apache_beam.utils.subprocess_server:}] were consumed but never produced 
                                                                                
                                                                           
   INFO:apache_beam.utils.subprocess_server:       at 
org.apache.beam.vendor.guava.v26_0_jre.com.google.common.base.Preconditions.checkArgument(Preconditions.java:440)
                                                                    
   INFO:apache_beam.utils.subprocess_server:       at 
org.apache.beam.runners.core.construction.graph.QueryablePipeline.buildNetwork(QueryablePipeline.java:234)
                                                                           
   INFO:apache_beam.utils.subprocess_server:       at 
org.apache.beam.runners.core.construction.graph.QueryablePipeline.<init>(QueryablePipeline.java:127)
                                                                                
 
   INFO:apache_beam.utils.subprocess_server:       at 
org.apache.beam.runners.core.construction.graph.QueryablePipeline.forPrimitivesIn(QueryablePipeline.java:90)
                                                                         
   INFO:apache_beam.utils.subprocess_server:       at 
org.apache.beam.runners.core.construction.graph.GreedyPipelineFuser.<init>(GreedyPipelineFuser.java:70)
                                                                              
   INFO:apache_beam.utils.subprocess_server:       at 
org.apache.beam.runners.core.construction.graph.GreedyPipelineFuser.fuse(GreedyPipelineFuser.java:93)
                                                                                
   INFO:apache_beam.utils.subprocess_server:       at 
org.apache.beam.runners.flink.FlinkPipelineRunner.runPipelineWithTranslator(FlinkPipelineRunner.java:112)
                                                                            
   INFO:apache_beam.utils.subprocess_server:       at 
org.apache.beam.runners.flink.FlinkPipelineRunner.run(FlinkPipelineRunner.java:85)
                                                                                
                   INFO:apache_beam.utils.subprocess_server:       at 
org.apache.beam.runners.jobsubmission.JobInvocation.runPipeline(JobInvocation.java:86)
                                                                                
               
   INFO:apache_beam.utils.subprocess_server:       at 
org.apache.beam.vendor.guava.v26_0_jre.com.google.common.util.concurrent.TrustedListenableFutureTask$TrustedFutureInterruptibleTask.runInterruptibly(TrustedListenableFutureTask.java
   :125)                                                                        
                                                                                
                                                                           
   INFO:apache_beam.utils.subprocess_server:       at 
org.apache.beam.vendor.guava.v26_0_jre.com.google.common.util.concurrent.InterruptibleTask.run(InterruptibleTask.java:57)
                                                            
   INFO:apache_beam.utils.subprocess_server:       at 
org.apache.beam.vendor.guava.v26_0_jre.com.google.common.util.concurrent.TrustedListenableFutureTask.run(TrustedListenableFutureTask.java:78)
                                        
   INFO:apache_beam.utils.subprocess_server:       at 
java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1130)
                                                                                
            
   INFO:apache_beam.utils.subprocess_server:       at 
java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:630)
                                                                                
            
   INFO:apache_beam.utils.subprocess_server:       at 
java.base/java.lang.Thread.run(Thread.java:830)   
   ```
   
   Maybe this has to do with using Dataflow built-in pubsub source? I'm pretty 
sure I've run this successfully on Flink before though. Any idea what's 
happening here @chamikaramj?


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