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https://issues.apache.org/jira/browse/KUDU-3692?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Marton Greber reassigned KUDU-3692:
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Assignee: Marton Greber
> Add table attribution to tablet metrics in /metrics_prometheus
> --------------------------------------------------------------
>
> Key: KUDU-3692
> URL: https://issues.apache.org/jira/browse/KUDU-3692
> Project: Kudu
> Issue Type: Sub-task
> Components: metrics, Prometheus
> Affects Versions: 1.18.0
> Reporter: Marton Greber
> Assignee: Marton Greber
> Priority: Major
>
> In 1.18.0 the Prometheus exposition for tablet metrics (/metrics_prometheus)
> does not include table attribution. Tablet IDs appear in metric names (e.g.,
> kudu_tablet_<tablet_id>_live_row_count), but there are no Prometheus labels
> that allow joining a tablet to its table.
> In contrast, the JSON metrics (/metrics) expose attributes like table_id,
> table_name, and human-readable partition info under the tablet entity.
> While implementing this fix one should look into how much more work it would
> take to have "label parity" with the existing json metrics that are available.
> Supplementary:
> Root issue reported on Slack:
> "I get all the metrics per tablet. The tabletID is in the metric name
> (example: kudu_tablet_d3ef3d70f47a47fc8073593c8587f58b_live_row_count).
> Unfortunately, I can't find the mappings from a table_name to the tabletID in
> the metric name."
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