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Posted to commits@beam.apache.org by "Jean-Baptiste Onofré (JIRA)" <ji...@apache.org> on 2017/01/26 08:17:24 UTC

[jira] [Created] (BEAM-1323) Add parallelism/splitting in JdbcIO

Jean-Baptiste Onofré created BEAM-1323:
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             Summary: Add parallelism/splitting in JdbcIO
                 Key: BEAM-1323
                 URL: https://issues.apache.org/jira/browse/BEAM-1323
             Project: Beam
          Issue Type: Improvement
          Components: sdk-java-extensions
            Reporter: Jean-Baptiste Onofré
            Assignee: Jean-Baptiste Onofré


Now, the JDBC IO is basically a {{DoFn}} executed with a {{ParDo}}. So, it means that parallelism is "limited" and executed on one executor.
We can imagine to create several JDBC {{BoundedSource}}s splitting the SQL query in  subset (for instance using row id paging or any "splitting/limit" we can figure based on the original SQL query) (something similar to what Sqoop is doing).



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