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Posted to issues@hive.apache.org by "Mustafa Iman (Jira)" <ji...@apache.org> on 2020/06/02 22:40:00 UTC

[jira] [Assigned] (HIVE-23596) Encode guaranteed task information in containerId

     [ https://issues.apache.org/jira/browse/HIVE-23596?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Mustafa Iman reassigned HIVE-23596:
-----------------------------------


> Encode guaranteed task information in containerId
> -------------------------------------------------
>
>                 Key: HIVE-23596
>                 URL: https://issues.apache.org/jira/browse/HIVE-23596
>             Project: Hive
>          Issue Type: Improvement
>            Reporter: Mustafa Iman
>            Assignee: Mustafa Iman
>            Priority: Major
>
> We should avoid calling LlapTaskScheduler to get initial isguaranteed flag for all the tasks. It causes arbitrary delays in sending tasks out. Since communicator is a single thread, any blocking there delays all the tasks.
> There are [https://jira.apache.org/jira/browse/TEZ-4192] and [https://jira.apache.org/jira/browse/HIVE-23589] for a proper solution to this. However, that requires a Tez release which seems far right now. We can replace the current hack with another hack that does not require locking.



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