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greptimedb/src/frontend
dennis zhuang 02278d301b feat: derive k8s.node from OTLP resource attributes (#9002)
The k8s.pod runs_on k8s.node rule can only fire from kube_pod_info: it is
the only table declaring both endpoints, and co-declared edges require
both on the same row. A deployment sending only OTLP has no
kube-state-metrics tables, so its node layer is invisible and that rule
has no source at all, even though the resource attributes carry
k8s.node.name.

Declare k8s.node in otlp_trace_entities and in the synthesized resource
descriptor, and project k8s.node.name in the descriptor writer so the
column the declaration needs exists. Identity is the name rather than
k8s.node.uid: kube-state-metrics carries no node UID, so the name is the
only identity both sources can agree on.

Signed-off-by: Dennis Zhuang <killme2008@gmail.com>
2026-09-02 05:12:30 +00:00
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