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https://issues.apache.org/jira/browse/HIVE-17426?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16177472#comment-16177472
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Lefty Leverenz commented on HIVE-17426:
---------------------------------------

Doc note:  This changes the default value and description for 
*hive.repl.approx.max.load.tasks*, which was created by HIVE-16896 in the same 
release.  It's already documented in the wiki (thanks, [~anishek]).

* [hive.repl.approx.max.load.tasks | 
https://cwiki.apache.org/confluence/display/Hive/Configuration+Properties#ConfigurationProperties-hive.repl.approx.max.load.tasks]

> 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, HIVE-17426.6.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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