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From "Sergey Shelukhin (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HIVE-12856) LLAP: update (add/remove) the UDFs available in LLAP when they are changed (refresh periodically)
Date Wed, 17 Feb 2016 02:14:18 GMT

     [ https://issues.apache.org/jira/browse/HIVE-12856?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Sergey Shelukhin updated HIVE-12856:
------------------------------------
    Attachment: HIVE-12856.02.nogen.patch

> 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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