Number of times an ingest queue consumer hit an empty queue while pushing to in-memory job queue for digest writers

Metric Nameingest-writer-queue-empty
Metric TypeMeter

Example Metric Record:

json
{
   "#repo" : "humio-metrics",
   "#type" : "metrics",
   "@host" : "210",
   "@id" : "BTKrczf0lFjHhPdTzOIN7uZY_508_577_1756630898",
   "@ingesttimestamp" : "1756630898749",
   "@timestamp" : 1756630898716,
   "@timestamp.nanos" : "0",
   "@timezone" : "UTC",
   "count" : "6622054",
   "m1" : "2.214305356791167E10",
   "m15" : "2.0439097100800114E10",
   "m5" : "2.1247381576240932E10",
   "mean_rate" : "2.0513065973602642E10",
   "name" : "ingest-writer-queue-empty",
   "rate_unit" : "underflows/second",
   "type" : "METER"
}