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https://issues.apache.org/jira/browse/SPARK-18540?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Dongjoon Hyun resolved SPARK-18540.
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Resolution: Duplicate
Fix Version/s: 2.3.0
This is resolved at 2.3.0 by SPARK-16060.
> Wholestage code-gen for ORC Hive tables
> ---------------------------------------
>
> Key: SPARK-18540
> URL: https://issues.apache.org/jira/browse/SPARK-18540
> Project: Spark
> Issue Type: Improvement
> Reporter: Damian Momot
> Fix For: 2.3.0
>
>
> Spark already optimizes hive parquet tables reading using whole stage code
> generation.
> Similar approach could be used for scanning Hive ORC tables - currently
> standard hive table scan is used.
> ORC is sometimes preferred over parquet in hive ecosystem because of better
> support and characteristics in certain scenarios
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