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From "Sergey Shelukhin (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-11969) start Tez session in background when starting CLI
Date Fri, 02 Oct 2015 21:20:27 GMT

    [ https://issues.apache.org/jira/browse/HIVE-11969?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14941783#comment-14941783
] 

Sergey Shelukhin commented on HIVE-11969:
-----------------------------------------

Tested the recent patch on cluster, clogging it with spurious llap processes :)
The CLI looks like the attached while Tez app is submitted but not running. When I stopped
the llap cluster, the query started running.
I could run the queries (such as "use database") without Tez AM (see OK above the query start).
Query also compiled without waiting for AM.

> start Tez session in background when starting CLI
> -------------------------------------------------
>
>                 Key: HIVE-11969
>                 URL: https://issues.apache.org/jira/browse/HIVE-11969
>             Project: Hive
>          Issue Type: Bug
>          Components: Tez
>            Reporter: Sergey Shelukhin
>            Assignee: Sergey Shelukhin
>         Attachments: HIVE-11969.01.patch, HIVE-11969.02.patch, HIVE-11969.03.patch, HIVE-11969.patch
>
>
> Tez session spins up AM, which can cause delays, esp. if the cluster is very busy.
> This can be done in background, so the AM might get started while the user is running
local commands and doing other things.



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