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https://issues.apache.org/jira/browse/SPARK-12385?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Hyukjin Kwon resolved SPARK-12385.
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Resolution: Incomplete
> Push projection into Join
> -------------------------
>
> Key: SPARK-12385
> URL: https://issues.apache.org/jira/browse/SPARK-12385
> Project: Spark
> Issue Type: Improvement
> Components: Optimizer, SQL
> Reporter: Davies Liu
> Priority: Major
> Labels: bulk-closed
>
> We usually have Join followed by a projection to pruning some columns, but
> Join already have a result projection to produce UnsafeRow, we should combine
> them together.
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