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https://issues.apache.org/jira/browse/SPARK-13661?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Reynold Xin resolved SPARK-13661.
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Resolution: Fixed
Assignee: Davies Liu
Fix Version/s: 2.0.0
> Avoid the copy of UnsafeRow in HashedRelation
> ---------------------------------------------
>
> Key: SPARK-13661
> URL: https://issues.apache.org/jira/browse/SPARK-13661
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Reporter: Davies Liu
> Assignee: Davies Liu
> Fix For: 2.0.0
>
>
> We usually build the HashedRelation on top of array of UnsafeRow, the copy
> could be avoided.
> The caller of HashedRelation need to do the copy if it's needed.
> Another approach could be making the copy() of UnsafeRow smart so that it
> know when should copy the bytes or not, this could be also useful for other
> components.
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