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https://issues.apache.org/jira/browse/HIVE-17426?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16174305#comment-16174305
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Thejas M Nair commented on HIVE-17426:
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I think we should make something executable only if it has been cleared to run
in parallel. That way its going to be more resilient to bugs caused by future
changes.
+1 since other comments have been addressed.
> 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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