Alex Aranovsky created FLINK-37343:
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             Summary: Support for Dynamic Table Selection in DynamoDB Sink 
Connector
                 Key: FLINK-37343
                 URL: https://issues.apache.org/jira/browse/FLINK-37343
             Project: Flink
          Issue Type: New Feature
          Components: Connectors / DynamoDB
            Reporter: Alex Aranovsky


Hey, we have a use-case where we need to sink record into multiple ddb tables 
without a job reset (topology change), we use the DynamicKafka source and we've 
essentially forked the regular ddb connector and added support for providing a 
table as part of the ElementsConverter interface. Since DDB batchWriteItem 
supports multiple items in a single request, I don't really see a downside into 
not including it. There is some serdes cost associated with providing the table 
name as a string on each element we provide to the sink, I'm not sure how 
significant this is.


This is both a question and a feature request: I can merge the fork upstream, 
is this something that makes sense to include in the default connector?

Is the serdes cost negligible?

Can I add the table name field as part of the DynamoDbWriteRequest class? it 
will be a breaking change.



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