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https://issues.apache.org/jira/browse/HDDS-15602?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Ivan Andika updated HDDS-15602:
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Description:
We found that the CPU time of createPipelineForRead is mostly spent on random
UUID generation that uses SecureRandom. SecureRandom is static and requires
therefore lock should be static. I don't think it is required to use
SecureRandom. Since the SecureRandom is static, it also contends with all other
UUID generation and can affect performance (as per Amdahl's law)
!image-2026-06-18-17-44-58-985.png|width=855,height=678!
was:
We found that the CPU time of createPipelineForRead is mostly spent on random
UUID generation that uses SecureRandom. SecureRandom is static and requires
therefore lock can be static. I don't think it is required to use SecureRandom.
Since the SecureRandom is static, it also contends with all other UUID
generation and can affect performance (as per Amdahl's law)
!image-2026-06-18-17-44-58-985.png|width=855,height=678!
> PipelineId randomId does not need to use secure random
> ------------------------------------------------------
>
> Key: HDDS-15602
> URL: https://issues.apache.org/jira/browse/HDDS-15602
> Project: Apache Ozone
> Issue Type: Improvement
> Reporter: Ivan Andika
> Assignee: Ivan Andika
> Priority: Major
> Attachments: image-2026-06-18-17-44-58-985.png
>
>
> We found that the CPU time of createPipelineForRead is mostly spent on random
> UUID generation that uses SecureRandom. SecureRandom is static and requires
> therefore lock should be static. I don't think it is required to use
> SecureRandom. Since the SecureRandom is static, it also contends with all
> other UUID generation and can affect performance (as per Amdahl's law)
> !image-2026-06-18-17-44-58-985.png|width=855,height=678!
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