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https://issues.apache.org/jira/browse/SPARK-12854?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15118912#comment-15118912
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Apache Spark commented on SPARK-12854:
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User 'jaceklaskowski' has created a pull request for this issue:
https://github.com/apache/spark/pull/10946
> Vectorize Parquet reader
> ------------------------
>
> Key: SPARK-12854
> URL: https://issues.apache.org/jira/browse/SPARK-12854
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Reporter: Reynold Xin
>
> The parquet encodings are largely designed to decode faster in batches,
> column by column. This can speed up the decoding considerably.
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