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https://issues.apache.org/jira/browse/SPARK-20807?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16017154#comment-16017154
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Apache Spark commented on SPARK-20807:
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User 'kiszk' has created a pull request for this issue:
https://github.com/apache/spark/pull/18033
> Add compression/decompression of data to ColumnVector
> -----------------------------------------------------
>
> Key: SPARK-20807
> URL: https://issues.apache.org/jira/browse/SPARK-20807
> Project: Spark
> Issue Type: Sub-task
> Components: SQL
> Affects Versions: 2.3.0
> Reporter: Kazuaki Ishizaki
>
> While current {{CachedBatch}} can compress data by using of of multiple
> compression schemes, {{ColumnVector}} cannot compress data. It is mandatory
> for table cache.
> This JIRA adds compression/decompression to {{ColumnVector}}.
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