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

["Chao Sun (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HIVE-14340?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Chao Sun updated HIVE-14340:
----------------------------
    Attachment: HIVE-14340.0.patch

Attaching initial patch. This adds a new configuration:
{code}
hive.query.hooks
{code}
which triggers before a query's compilation and after its execution.

> 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
>
>
> 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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