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https://issues.apache.org/jira/browse/SPARK-6138?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14344892#comment-14344892
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Apache Spark commented on SPARK-6138:
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User 'cloud-fan' has created a pull request for this issue:
https://github.com/apache/spark/pull/4825
> Enhance the `toArray` method in `SizeTrackingVector`
> ----------------------------------------------------
>
> Key: SPARK-6138
> URL: https://issues.apache.org/jira/browse/SPARK-6138
> Project: Spark
> Issue Type: Improvement
> Components: Spark Core
> Reporter: Wenchen Fan
> Priority: Minor
>
> Use array copy instead of `Iterator#toArray` to make it more efficient.
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