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