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https://issues.apache.org/jira/browse/SPARK-14961?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15260759#comment-15260759
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Apache Spark commented on SPARK-14961:
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User 'davies' has created a pull request for this issue:
https://github.com/apache/spark/pull/12740

> Support LongToUnsafeRowMap larger than 1G
> -----------------------------------------
>
>                 Key: SPARK-14961
>                 URL: https://issues.apache.org/jira/browse/SPARK-14961
>             Project: Spark
>          Issue Type: Improvement
>          Components: SQL
>    Affects Versions: 2.0.0
>            Reporter: Davies Liu
>            Assignee: Davies Liu
>
> LongToUnsafeRowMap uses an byte array to store all the UnsafeRows, which 
> can't not be larger than 1G for now, we could use long array to scale up to 
> 8G.



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