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https://issues.apache.org/jira/browse/KYLIN-3317?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Ted Yu updated KYLIN-3317:
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Description:
Currently UUID.randomUUID is called in various places in the code base.
* It is non-deterministic.
* It uses a single secure random for UUID generation. This uses a single JVM
wide lock, and this can lead to lock contention and other performance problems.
We should move to something that is deterministic by using seeded PRNGs
was:
Currently UUID.randomUUID is called in various places in the code base.
* It is non-deterministic.
* It uses a single secure random for UUID generation. This uses a single JVM
wide lock, and this can lead to lock contention and other performance problems.
We should move to something that is deterministic by using seeded PRNGs
> Replace UUID.randomUUID with deterministic PRNG
> -----------------------------------------------
>
> Key: KYLIN-3317
> URL: https://issues.apache.org/jira/browse/KYLIN-3317
> Project: Kylin
> Issue Type: Task
> Reporter: Ted Yu
> Priority: Major
>
> Currently UUID.randomUUID is called in various places in the code base.
> * It is non-deterministic.
> * It uses a single secure random for UUID generation. This uses a single JVM
> wide lock, and this can lead to lock contention and other performance
> problems.
> We should move to something that is deterministic by using seeded PRNGs
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