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https://issues.apache.org/jira/browse/HBASE-27708?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17700228#comment-17700228
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Nick Dimiduk commented on HBASE-27708:
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This happens without tracing and without hadoop security.
> CPU hot-spot resolving User subject
> -----------------------------------
>
> Key: HBASE-27708
> URL: https://issues.apache.org/jira/browse/HBASE-27708
> Project: HBase
> Issue Type: Bug
> Components: Client, tracing
> Affects Versions: 2.5.0
> Reporter: Nick Dimiduk
> Priority: Major
> Attachments: 27708.jpg
>
>
> Even with OpenTelemetry tracing disabled, we see contention related to
> populating the string representation of the User principle on the client
> side. Can HBase connection cache this?
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