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From "Sergey Shelukhin (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-12938) Tez session pool shouldn't create a new session if one of the default queues is specified
Date Tue, 26 Jan 2016 23:47:40 GMT

    [ https://issues.apache.org/jira/browse/HIVE-12938?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15118301#comment-15118301
] 

Sergey Shelukhin commented on HIVE-12938:
-----------------------------------------

[~sseth] fyi

> Tez session pool shouldn't create a new session if one of the default queues is specified
> -----------------------------------------------------------------------------------------
>
>                 Key: HIVE-12938
>                 URL: https://issues.apache.org/jira/browse/HIVE-12938
>             Project: Hive
>          Issue Type: Improvement
>            Reporter: Takahiko Saito
>
> Presenlty, Tez session pool says "if the user has specified a queue name themselves,
we create a new session". Which is what it actually does. This can lead to a counter-intuitive
situation where we have idle pool sessions for a queue foo, the user requests a session from
that queue, and a new one is started.
> It should be possible to choose a pool session if it's from one of the default queues...
we need to see if it's reasonable to have a separate lookup structure for that. As luck would
have it, there's already some in-use state tracking on the sessions themselves.



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