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https://issues.apache.org/jira/browse/HBASE-26648?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Work on HBASE-26648 started by Nick Dimiduk.
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> Improve fidelity of RegionLocator spans
> ---------------------------------------
>
> Key: HBASE-26648
> URL: https://issues.apache.org/jira/browse/HBASE-26648
> Project: HBase
> Issue Type: Sub-task
> Components: tracing
> Reporter: Nick Dimiduk
> Assignee: Nick Dimiduk
> Priority: Major
>
> While backporting HBASE-26474 to branch-2, I realized that the nuance of
> tracing of region locator calls is lacking. In the current implementation,
> all calls to the region locator produce {{SpanKind.CLIENT}} spans. This is
> correct only for the code path where the client reaches out to a remote host
> to populate cache locations. This doesn't happen every time.
> Instead, the top-level span should be {{SpanKind.INTERNAL}} and only when a
> region location must be requested remotely should we create a child span with
> {{SpanKind.CLIENT}}.
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