Jonathan Hung created YARN-6152:
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Summary: Used queue percentage not accurate in UI for 2.7 and
below when using DominantResourceCalculator
Key: YARN-6152
URL: https://issues.apache.org/jira/browse/YARN-6152
Project: Hadoop YARN
Issue Type: Bug
Reporter: Jonathan Hung
Assignee: Jonathan Hung
YARN-4751 adds the {{getUsedCapacity}} and {{getAbsoluteUsedCapacity}} methods
to {{AbstractCSQueue}} which is used to display queue usage in UI for
branch-2.7 and below. However if there is more than one partition in the
cluster, with different dominant resources, then queue usage may not be
displayed as expected.
Contrived example: Default partition has <90GB, 10vcores>, and "test" partition
has <10GB, 90vcores>. {{root}} queue in default partition uses <50GB,
10vcores>. Here we expect queue usage to be 100 since it is using all vcores in
default partition. But the displayed usage will be (50GB/100GB)/(90GB/100GB) =
55.6%.
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