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https://issues.apache.org/jira/browse/HIVE-24914?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Panagiotis Garefalakis resolved HIVE-24914.
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Resolution: Fixed
> Improve LLAP 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
> Components: llap
> Reporter: Panagiotis Garefalakis
> Assignee: Panagiotis Garefalakis
> Priority: Major
> Labels: pull-request-available
> Fix For: 4.0.0
>
> Time Spent: 1.5h
> 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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