[jira] [Work logged] (HIVE-24472) Optimize LlapTaskSchedulerService::preemptTasksFromMap

["ASF GitHub Bot (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HIVE-24472?focusedWorklogId=571988&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-571988 ]

ASF GitHub Bot logged work on HIVE-24472:
-----------------------------------------

                Author: ASF GitHub Bot
            Created on: 25/Mar/21 16:35
            Start Date: 25/Mar/21 16:35
    Worklog Time Spent: 10m 
      Work Description: pgaref opened a new pull request #2123:
URL: https://github.com/apache/hive/pull/2123


   ### What changes were proposed in this pull request?
   Moving the (compute intensive) selection of preemption candidates on a separate thread.
   
   
   ### Why are the changes needed?
   Make sure scheduling task cycles are as fast as possible and remove any non-essential work from that loop.
   
   
   ### Does this PR introduce _any_ user-facing change?
   No
   
   
   ### How was this patch tested?
   TestLlapTaskSchedulerService
   


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Issue Time Tracking
-------------------

            Worklog Id:     (was: 571988)
    Remaining Estimate: 0h
            Time Spent: 10m

> Optimize LlapTaskSchedulerService::preemptTasksFromMap
> ------------------------------------------------------
>
>                 Key: HIVE-24472
>                 URL: https://issues.apache.org/jira/browse/HIVE-24472
>             Project: Hive
>          Issue Type: Sub-task
>            Reporter: Rajesh Balamohan
>            Assignee: Panagiotis Garefalakis
>            Priority: Major
>         Attachments: Screenshot 2020-12-03 at 12.13.03 PM.png
>
>          Time Spent: 10m
>  Remaining Estimate: 0h
>
> !Screenshot 2020-12-03 at 12.13.03 PM.png|width=1063,height=571!
> speculativeTasks could possibly include node information to reduce CPU burn in LlapTaskSchedulerService::preemptTasksFromMap
>  
>  



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