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From "Sergey Shelukhin (JIRA)" <j...@apache.org>
Subject [jira] [Assigned] (HIVE-15664) LLAP text cache: improve first query perf
Date Thu, 19 Jan 2017 04:00:29 GMT

     [ https://issues.apache.org/jira/browse/HIVE-15664?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Sergey Shelukhin reassigned HIVE-15664:
---------------------------------------

    Assignee: Sergey Shelukhin

> 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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