Pablo Estrada created BEAM-13847:
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             Summary: Support dynamic partitioning of JdbcIO ranges via SDF
                 Key: BEAM-13847
                 URL: https://issues.apache.org/jira/browse/BEAM-13847
             Project: Beam
          Issue Type: Sub-task
          Components: io-java-jdbc
            Reporter: Pablo Estrada


basically we'd turn ReadFn into an SDF that can dynamically partition the range 
it's currently reading.

To commit this change, we'd need to performance-test its behavior, to make sure 
that duplicatiopn of work on the Database-side is not a problem when we 
subpartition a range that we're already querying.



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