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From "Daniel Dai (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-17426) Execution framework in hive to run tasks in parallel
Date Wed, 20 Sep 2017 06:01:00 GMT

    [ https://issues.apache.org/jira/browse/HIVE-17426?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16172781#comment-16172781
] 

Daniel Dai commented on HIVE-17426:
-----------------------------------

What's the criteria for parallel task? I see some of the task are excluded, such as explain/fetch/repldump,
not all of them are using SessionState, why are they different? Also I am thinking instead
of black list, can we use a white list to start with?

> Execution framework in hive to run tasks in parallel
> ----------------------------------------------------
>
>                 Key: HIVE-17426
>                 URL: https://issues.apache.org/jira/browse/HIVE-17426
>             Project: Hive
>          Issue Type: Improvement
>          Components: HiveServer2
>    Affects Versions: 3.0.0
>            Reporter: anishek
>            Assignee: anishek
>             Fix For: 3.0.0
>
>         Attachments: HIVE-17426.0.patch, HIVE-17426.1.patch, HIVE-17426.2.patch, HIVE-17426.3.patch,
HIVE-17426.4.patch, HIVE-17426.5.patch
>
>
> the execution framework currently only runs MR / Spark  Tasks in parallel when {{set
hive.exec.parallel=true}}.
> Allow other types of tasks to run in parallel as well to support replication scenarios
in hive. 



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