[GitHub] [beam] damccorm opened a new issue, #21079: BigQueryIO.readTableRows() throws NullPointerException

[GitBox <gi...@apache.org>]

damccorm opened a new issue, #21079:
URL: https://github.com/apache/beam/issues/21079

   I tried different methods to extract table content using *BigQueryIO* but in all scenarios, when I try to use *DataflowRunner* I always get the same *NullPointerException*.
   
   The reason I found for this error is that while reading the table, *if there are any null values it ignore them without setting the null value*.
   
   ```
   
           PCollection<TableRow> tableRows = p.apply("ReadFromBQ", 
   
           BigQueryIO
   
           ._readTableRows_()
   
    
         .from(project:dataset.table)
   
           );
   
   ```
   
    
   
   The only thing it worked was using DirectRunner with `.readTableRowsWithSchema()` but using DataflowRunner I'm still facing the issue.
   
    
   
   Please solve this bug and/or help me to find a solution.
   
   Imported from Jira [BEAM-12835](https://issues.apache.org/jira/browse/BEAM-12835). Original Jira may contain additional context.
   Reported by: Fra.G.


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