[jira] [Commented] (HIVE-10647) Hive on LLAP: Limit HS2 from overwhelming LLAP

["Gunther Hagleitner (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HIVE-10647?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14592851#comment-14592851 ] 

Gunther Hagleitner commented on HIVE-10647:
-------------------------------------------

Change LGTM, but I'm not sure I agree with the assessment of default == 1. I don't think you need to configure a large number. Just add a clause for num > 0 to the if statement for both acquire and release. For CLI 1 is enough, that's true. But unlimited doesn't hurt either.

For hs2, user should configure it - agreed. But if you're just giving llap a spin, we should just let queries in. I think we would give a very bad experience out of the box if we left this at 1. Would look very slow to most ppl. If they just have a number of ppl kicking the tires, unlimited is probably fine. If you roll into prod you will probably restrict it based on cluster capacity.

> Hive on LLAP: Limit HS2 from overwhelming LLAP
> ----------------------------------------------
>
>                 Key: HIVE-10647
>                 URL: https://issues.apache.org/jira/browse/HIVE-10647
>             Project: Hive
>          Issue Type: Bug
>          Components: Tez
>    Affects Versions: llap
>            Reporter: Vikram Dixit K
>            Assignee: Vikram Dixit K
>         Attachments: HIVE-10647.1.patch, HIVE-10647.2.patch
>
>
> We want to restrict the number of queries that flow through LLAP. 



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