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https://issues.apache.org/jira/browse/HIVE-15664?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15829274#comment-15829274
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Sergey Shelukhin commented on HIVE-15664:
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[~gopalv] fyi
> LLAP text cache: improve first query perf
> -----------------------------------------
>
> Key: HIVE-15664
> URL: https://issues.apache.org/jira/browse/HIVE-15664
> Project: Hive
> Issue Type: Bug
> Reporter: Sergey Shelukhin
> Assignee: Sergey Shelukhin
> Attachments: HIVE-15664.WIP.patch
>
>
> 1) Don't use ORC dictionary.
> 2) Use VectorDeserialize.
> 3) Don't parse the columns that are not included (cannot avoid reading them).
> 4) Send VRB to the pipeline and write ORC in parallel (in background).
> Also add an option to disable the encoding pipeline server-side.
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