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Posted to issues@hive.apache.org by "ASF GitHub Bot (Jira)" <ji...@apache.org> on 2021/03/23 16:52:00 UTC

[jira] [Updated] (HIVE-24914) Improve scheduling by only traversing hosts with capacity

     [ https://issues.apache.org/jira/browse/HIVE-24914?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

ASF GitHub Bot updated HIVE-24914:
----------------------------------
    Labels: pull-request-available  (was: )

> Improve scheduling by only traversing hosts with capacity
> ---------------------------------------------------------
>
>                 Key: HIVE-24914
>                 URL: https://issues.apache.org/jira/browse/HIVE-24914
>             Project: Hive
>          Issue Type: Sub-task
>            Reporter: Panagiotis Garefalakis
>            Assignee: Panagiotis Garefalakis
>            Priority: Major
>              Labels: pull-request-available
>          Time Spent: 10m
>  Remaining Estimate: 0h
>
> *schedulePendingTasks* on the LlapTaskScheduler currently goes through all the pending tasks and tries to allocate them based on their Priority -- if a priority can not be scheduled completely, we bail out as lower priorities would not be able to get allocations either.
> An optimization here could be to only walk through the nodes with capacity (if any) ,and not all available hosts, for scheduling these tasks based on their priority and locality preferences.



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