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From "Lefty Leverenz (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-14340) Add a new hook triggers before query compilation and after query execution
Date Mon, 15 May 2017 04:45:04 GMT

    [ https://issues.apache.org/jira/browse/HIVE-14340?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16009983#comment-16009983
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Lefty Leverenz commented on HIVE-14340:
---------------------------------------

Thanks for the doc, Sahil.  Here's a direct link to the config:

* [Configuration Properties -- hive.query.lifetime.hooks | https://cwiki.apache.org/confluence/display/Hive/Configuration+Properties#ConfigurationProperties-hive.query.lifetime.hooks]

> Add a new hook triggers before query compilation and after query execution
> --------------------------------------------------------------------------
>
>                 Key: HIVE-14340
>                 URL: https://issues.apache.org/jira/browse/HIVE-14340
>             Project: Hive
>          Issue Type: Improvement
>          Components: Query Processor
>    Affects Versions: 2.2.0
>            Reporter: Chao Sun
>            Assignee: Chao Sun
>             Fix For: 2.3.0
>
>         Attachments: HIVE-14340.0.patch, HIVE-14340.1.patch, HIVE-14340.2.patch
>
>
> In some cases we may need to have a hook that activates before a query compilation and
after its execution. For instance, dynamically generate a UDF specifically for the running
query and clean up the resource after the query is done. The current hooks only covers pre
& post semantic analysis, pre & post query execution, which doesn't fit the requirement.



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