Panagiotis Garefalakis created HIVE-24914:
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Summary: 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
*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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