[KAFKA-10776] JMX metric RequestsPerSec requires API version to access

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 2.8.0
• Assignee: Luke Chen
• Reporter: Badai Aqrandista
• Created: 30/Nov/20 01:44
• Updated: 25/Dec/20 02:24
• Resolved: 25/Dec/20 02:24

Description

JMX metric for "kafka.network:type=RequestMetrics,name=RequestsPerSec,request=Produce" seems to require the API version by adding "version=8" at the end of JMX metric name.

badai@Badai-Aqrandista-MBP15 % bin/kafka-run-class kafka.tools.JmxTool --jmx-url service:jmx:rmi:///jndi/rmi://127.0.0.1:9999/jmxrmi -object-name kafka.network:type=RequestMetrics,name=RequestsPerSec,request=Produce           Trying to connect to JMX url: service:jmx:rmi:///jndi/rmi://127.0.0.1:9999/jmxrmi. No matched attributes for the queried objects ArrayBuffer(kafka.network:type=RequestMetrics,name=RequestsPerSec,request=Produce).

 

badai@Badai-Aqrandista-MBP15 % bin/kafka-run-class kafka.tools.JmxTool --jmx-url service:jmx:rmi:///jndi/rmi://127.0.0.1:9999/jmxrmi -object-name kafka.network:type=RequestMetrics,name=RequestsPerSec,request=Produce,version=8
Trying to connect to JMX url: service:jmx:rmi:///jndi/rmi://127.0.0.1:9999/jmxrmi.
"time","kafka.network:type=RequestMetrics,name=RequestsPerSec,request=Produce,version=8:Count","kafka.network:type=RequestMetrics,name=RequestsPerSec,request=Produce,version=8:EventType","kafka.network:type=RequestMetrics,name=RequestsPerSec,request=Produce,version=8:FifteenMinuteRate","kafka.network:type=RequestMetrics,name=RequestsPerSec,request=Produce,version=8:FiveMinuteRate","kafka.network:type=RequestMetrics,name=RequestsPerSec,request=Produce,version=8:MeanRate","kafka.network:type=RequestMetrics,name=RequestsPerSec,request=Produce,version=8:OneMinuteRate","kafka.network:type=RequestMetrics,name=RequestsPerSec,request=Produce,version=8:RateUnit"
1606699872861,6,requests,0.1989162534702867,0.19690572377187665,0.15294943373697226,0.1883600179350904,SECONDS
1606699874859,6,requests,0.19781422719176484,0.19365115842372535,0.14552410136055885,0.1732995824406591,SECONDS
1606699876860,8,requests,0.19781422719176484,0.19365115842372535,0.18505354392836157,0.1732995824406591,SECONDS
1606699878863,8,requests,0.19893436710436987,0.19706180478057453,0.1768573689590503,0.19142554703039305,SECONDS
^C

 

While other JMX metric under RequestMetrics do not require to specify API version:

badai@Badai-Aqrandista-MBP15 confluent-5.5.1 % bin/kafka-run-class kafka.tools.JmxTool --jmx-url service:jmx:rmi:///jndi/rmi://127.0.0.1:9999/jmxrmi -object-name kafka.network:type=RequestMetrics,name=TotalTimeMs,request=Produce    Trying to connect to JMX url: service:jmx:rmi:///jndi/rmi://127.0.0.1:9999/jmxrmi. "time","kafka.network:type=RequestMetrics,name=TotalTimeMs,request=Produce:50thPercentile","kafka.network:type=RequestMetrics,name=TotalTimeMs,request=Produce:75thPercentile","kafka.network:type=RequestMetrics,name=TotalTimeMs,request=Produce:95thPercentile","kafka.network:type=RequestMetrics,name=TotalTimeMs,request=Produce:98thPercentile","kafka.network:type=RequestMetrics,name=TotalTimeMs,request=Produce:999thPercentile","kafka.network:type=RequestMetrics,name=TotalTimeMs,request=Produce:99thPercentile","kafka.network:type=RequestMetrics,name=TotalTimeMs,request=Produce:Count","kafka.network:type=RequestMetrics,name=TotalTimeMs,request=Produce:Max","kafka.network:type=RequestMetrics,name=TotalTimeMs,request=Produce:Mean","kafka.network:type=RequestMetrics,name=TotalTimeMs,request=Produce:Min","kafka.network:type=RequestMetrics,name=TotalTimeMs,request=Produce:StdDev" 1606700344429,2.0,2.0,4.699999999999989,31.279999999999745,46.0,46.0,72,46.0,2.638888888888889,1.0,5.436718033280366 1606700346433,2.0,2.0,4.699999999999989,31.279999999999745,46.0,46.0,72,46.0,2.638888888888889,1.0,5.436718033280366 
^C                                             

 

This is definitely not documented here: https://kafka.apache.org/documentation/#monitoring

 

I think "version=X" part in  "RequestsPerSec" is a mistake and should be removed.

 

Issue Links

• links to: GitHub Pull Request #9661