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https://issues.apache.org/jira/browse/HIVE-15664?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15837354#comment-15837354
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Lefty Leverenz commented on HIVE-15664:
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Doc note: This adds two configuration parameters to HiveConf.java
(*hive.llap.io.encode.enabled*, *hive.llap.io.encode.vector.serde.enabled*), so
they need to be documented in the wiki.
* [Configuration Properties -- LLAP |
https://cwiki.apache.org/confluence/display/Hive/Configuration+Properties#ConfigurationProperties-LLAP]
Added a TODOC2.2 label.
> LLAP text cache: improve first query perf I
> -------------------------------------------
>
> Key: HIVE-15664
> URL: https://issues.apache.org/jira/browse/HIVE-15664
> Project: Hive
> Issue Type: Bug
> Reporter: Sergey Shelukhin
> Assignee: Sergey Shelukhin
> Labels: TODOC2.2
> Fix For: 2.2.0
>
> Attachments: HIVE-15664.04.patch, HIVE-15664.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)-.
> HIVE-15672
> Also add an option to disable the encoding pipeline server-side.
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