Wangda Tan created YARN-7136:
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Summary: Additional Performance Improvement for Resource Profile
Feature
Key: YARN-7136
URL: https://issues.apache.org/jira/browse/YARN-7136
Project: Hadoop YARN
Issue Type: Sub-task
Reporter: Wangda Tan
Assignee: Wangda Tan
Priority: Critical
This JIRA is plan to add following misc perf improvements:
1) Use final int in Resources/ResourceCalculator to cache
#known-resource-types. (Significant improvement).
2) Catch Java's ArrayOutOfBound Exception instead of checking array.length
every time. (Significant improvement).
3) Avoid setUnit validation (which is a HashSet lookup) when initialize default
Memory/VCores ResourceInformation (Significant improvement).
4) Avoid unnecessary loop array in Resource#toString/hashCode. (Some
improvement).
5) Removed readOnlyResources in BaseResource. (Minor improvement).
6) Removed enum: MandatoryResources, use final integer instead. (Minor
improvement).
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