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https://issues.apache.org/jira/browse/SPARK-10451?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14731283#comment-14731283
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Apache Spark commented on SPARK-10451:
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User 'saucam' has created a pull request for this issue:
https://github.com/apache/spark/pull/8604
> Prevent unnecessary serializations in InMemoryColumnarTableScan
> ---------------------------------------------------------------
>
> Key: SPARK-10451
> URL: https://issues.apache.org/jira/browse/SPARK-10451
> Project: Spark
> Issue Type: Improvement
> Reporter: Yash Datta
>
> In InMemorycolumnarTableScan, seriliazation of certain fields like
> buildFilter, InMemoryRelation etc can be avoided during task execution by
> carefully managing the clsoure of mapPartitions.
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