/streamz help
Streamz Root:
Streamz ManuallySampledMetrics set:
Root name: <default> [(+) labels] [(+) collection] [(+) largest exported metrics]
Search:
/streamz/root_labels/string/hostname : string = 
yudfwra-ap19

Exported root label. See google3/monitoring/streamz/public/root.h for more information about root labels.
defined at monitoring/streamz/internal/core_metrics.cc:195 with annotations: CONSTANT=true