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https://issues.apache.org/jira/browse/SPARK-10065?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Davies Liu resolved SPARK-10065.
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Resolution: Fixed
Fix Version/s: 1.6.0
Issue resolved by pull request 8496
[https://github.com/apache/spark/pull/8496]
> Avoid triple copy of var-length objects in Array in tungsten projection
> -----------------------------------------------------------------------
>
> Key: SPARK-10065
> URL: https://issues.apache.org/jira/browse/SPARK-10065
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Affects Versions: 1.5.0
> Reporter: Davies Liu
> Fix For: 1.6.0
>
>
> The first copy happens when we calculate the size of each element, after
> that, we copy the elements into array buffer, finally we copy the array
> buffer into row buffer.
> We could calculate the total size first, then convert the elements into row
> buffer directly.
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