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From "Sergey Shelukhin (JIRA)" <j...@apache.org>
Subject [jira] [Comment Edited] (HIVE-12856) LLAP: update (add/remove) the UDFs available in LLAP when they are changed (refresh periodically)
Date Thu, 18 Feb 2016 18:53:18 GMT

    [ https://issues.apache.org/jira/browse/HIVE-12856?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15152842#comment-15152842
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Sergey Shelukhin edited comment on HIVE-12856 at 2/18/16 6:52 PM:
------------------------------------------------------------------

[~vikram.dixit] [~prasanth_j]  can you take a look at LLAP side of things?


was (Author: sershe):
[~vikram.dixit] [~prasanth_j]  can you take a look?

> LLAP: update (add/remove) the UDFs available in LLAP when they are changed (refresh periodically)
> -------------------------------------------------------------------------------------------------
>
>                 Key: HIVE-12856
>                 URL: https://issues.apache.org/jira/browse/HIVE-12856
>             Project: Hive
>          Issue Type: Sub-task
>            Reporter: Sergey Shelukhin
>            Assignee: Sergey Shelukhin
>         Attachments: HIVE-12856.01.nogen.patch, HIVE-12856.01.patch, HIVE-12856.02.nogen.patch,
HIVE-12856.02.patch, HIVE-12856.nogen.patch, HIVE-12856.patch
>
>
> I don't think re-querying the functions is going to scale, and the sessions obviously
cannot notify all LLAP clusters of every change. We should add global versioning to metastore
functions to track changes, and then possibly add a notification mechanism, potentially thru
ZK to avoid overloading the metastore itself.



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