ApacheKafkaRequest 161 true false false ApacheKafka false kafka.network:type=RequestMetrics,name=ErrorsPerSec,request=UpdateMetadata,error=NONE ` fixed KafkaCount FiveMinuteRate 1 double 1 MeanRate 1 double 2 OneMinuteRate 1 double 3 FifteenMinuteRate 1 double 4 Count 1 long 5