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Posted to issues@hive.apache.org by "Xuefu Zhang (JIRA)" <ji...@apache.org> on 2016/08/01 20:58:20 UTC

[jira] [Commented] (HIVE-14340) Add a new hook triggers before query compilation and after query execution

    [ https://issues.apache.org/jira/browse/HIVE-14340?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15402804#comment-15402804 ] 

Xuefu Zhang commented on HIVE-14340:
------------------------------------

Patch looks good to me. +1

> 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
>         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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