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https://issues.apache.org/jira/browse/HDDS-14018?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Attila Doroszlai updated HDDS-14018:
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Description:
Possible improvements for {{SCMNodeManager#getNodeStatistics}}:
- avoid repeated {{getAllNodes()}} calls, store and reuse the list
- avoid repeated iteration of nodes for {{nodeStateStatistics}} (by each
{{get...NodeCount()}} method)
- {{nodeUsageStatistics}} may base its calculations on values aggregated by
{{nodeSpaceStatistics}} instead of iterating storage reports itself
was:
Possible improvements for {{SCMNodeManager#getNodeStatistics}}:
- avoid repeated {{getAllNodes()}} calls, store and reuse the list
- each {{get...NodeCount()}} method called by {{nodeStateStatistics}}
separately iterates nodes, filtering for the specific state
- {{nodeUsageStatistics}} may base its calculations on values aggregated by
{{nodeSpaceStatistics}} instead of iterating storage reports itself
> Avoid repeated operations in SCMNodeManager#getNodeStatistics
> -------------------------------------------------------------
>
> Key: HDDS-14018
> URL: https://issues.apache.org/jira/browse/HDDS-14018
> Project: Apache Ozone
> Issue Type: Improvement
> Components: SCM
> Reporter: Attila Doroszlai
> Assignee: Attila Doroszlai
> Priority: Major
>
> Possible improvements for {{SCMNodeManager#getNodeStatistics}}:
> - avoid repeated {{getAllNodes()}} calls, store and reuse the list
> - avoid repeated iteration of nodes for {{nodeStateStatistics}} (by each
> {{get...NodeCount()}} method)
> - {{nodeUsageStatistics}} may base its calculations on values aggregated by
> {{nodeSpaceStatistics}} instead of iterating storage reports itself
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