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https://issues.apache.org/jira/browse/HIVE-24537?focusedWorklogId=602333&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-602333
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ASF GitHub Bot logged work on HIVE-24537:
-----------------------------------------
Author: ASF GitHub Bot
Created on: 26/May/21 13:23
Start Date: 26/May/21 13:23
Worklog Time Spent: 10m
Work Description: pgaref commented on pull request #2224:
URL: https://github.com/apache/hive/pull/2224#issuecomment-848766238
Merged to master, thanks @maheshk114 for the review!
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Issue Time Tracking
-------------------
Worklog Id: (was: 602333)
Time Spent: 1h 20m (was: 1h 10m)
> Optimise locking in LlapTaskSchedulerService
> --------------------------------------------
>
> Key: HIVE-24537
> URL: https://issues.apache.org/jira/browse/HIVE-24537
> Project: Hive
> Issue Type: Sub-task
> Components: llap
> Reporter: Rajesh Balamohan
> Assignee: Panagiotis Garefalakis
> Priority: Major
> Labels: pull-request-available
> Attachments: Screenshot 2020-12-15 at 11.41.49 AM.png
>
> Time Spent: 1h 20m
> Remaining Estimate: 0h
>
> 1. Read lock should suffice for "notifyStarted()".
> 2. Locking in "allocateTask()" can be optimised.
> 3. Optimize preemptTasks() & preemptTasksFromMap(). This would help in
> reducing the codepath with writeLock. Currently, it iterates through all
> tasks.
>
> !Screenshot 2020-12-15 at 11.41.49 AM.png|width=847,height=446!
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