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https://issues.apache.org/jira/browse/SPARK-7746?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14552335#comment-14552335
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Apache Spark commented on SPARK-7746:
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User 'viirya' has created a pull request for this issue:
https://github.com/apache/spark/pull/6283
> SetFetchSize for JDBCRDD's prepareStatement
> -------------------------------------------
>
> Key: SPARK-7746
> URL: https://issues.apache.org/jira/browse/SPARK-7746
> Project: Spark
> Issue Type: New Feature
> Components: SQL
> Affects Versions: 1.3.0, 1.3.1
> Reporter: Paul Wu
>
> The prepareStatement created internal to compute() method in JDBCRDD should
> have some options that the setFetchSize() can be set. We found that the
> parameter can affect Oracle DB tremendously. With current implementation, we
> have no way to set the size.
> One of my team did his implementation, and we found 10X improvement by
> setting the size to a proper number.
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