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https://issues.apache.org/jira/browse/SPARK-20101?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15942384#comment-15942384
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Apache Spark commented on SPARK-20101:
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User 'kiszk' has created a pull request for this issue:
https://github.com/apache/spark/pull/17436
> Use OffHeapColumnVector when "spark.memory.offHeap.enabled" is set to "true"
> ----------------------------------------------------------------------------
>
> Key: SPARK-20101
> URL: https://issues.apache.org/jira/browse/SPARK-20101
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Affects Versions: 2.2.0
> Reporter: Kazuaki Ishizaki
>
> While {{ColumnVector}} has two implementations {{OnHeapColumnVector}} and
> {{OffHeapColumnVector}}, only {{OnHeapColumnVector}} is used.
> This JIRA enables to use {{OffHeapColumnVector}} when
> {{spark.memory.offHeap.enabled}} is set to {{true}}.
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