Github user marmbrus commented on the pull request:
https://github.com/apache/spark/pull/8374#issuecomment-135141784
I don't think there is anything in conflict with implementing this in both
libraries. Really the redshift library is just a simplified version of this
since it only needs to handle one dialect (the reason it is its own library is
because it actually does extra work using S3 to parallel extract data instead
of using JDBC as the channel).
I'm only suggestion that we use the same option so that users don't have to
learn two different concepts. Can we just add some logic like this
(https://github.com/databricks/spark-redshift/pull/54/files#diff-69806564231efb590460b162532ba683R145)
in the appropriate dialects here in spark core?
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