damccorm opened a new issue, #21331:
URL: https://github.com/apache/beam/issues/21331

   Please add schema update support similar to what we have in the 
BigQueryStorage Java client: 
[https://github.com/googleapis/java-bigquerystorage/pull/1447](https://github.com/googleapis/java-bigquerystorage/pull/1447)
   
    
   
   When schema is updated, we should:
   
   1) close the existing StreamWriter
   
   2) update TableSchema and Descriptor
   
   3) create a new StreamWriter with the updated TableSchema and Descriptor
   
    
   
   Related customer impact: Case #29451211 (salesforce)
   
   Imported from Jira 
[BEAM-13944](https://issues.apache.org/jira/browse/BEAM-13944). Original Jira 
may contain additional context.
   Reported by: stephaniewang526.


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