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Posted to issues@beam.apache.org by "Ismaël Mejía (JIRA)" <ji...@apache.org> on 2019/06/10 12:12:00 UTC
[jira] [Updated] (BEAM-1323) Add parallelism/splitting in JdbcIO
[ https://issues.apache.org/jira/browse/BEAM-1323?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Ismaël Mejía updated BEAM-1323:
-------------------------------
Component/s: (was: z-do-not-use-sdk-java-extensions)
io-java-jdbc
> Add parallelism/splitting in JdbcIO
> -----------------------------------
>
> Key: BEAM-1323
> URL: https://issues.apache.org/jira/browse/BEAM-1323
> Project: Beam
> Issue Type: Improvement
> Components: io-java-jdbc
> Reporter: Jean-Baptiste Onofré
> Assignee: Jean-Baptiste Onofré
> Priority: Major
> Fix For: Not applicable
>
>
> 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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