Kafka emitter is emiting all matrices (Druid 25.0.0)

[Mrugesh Kadia]

Hi,

We are using Kafka ingestion to insert data into druid. our segment granularity is 1 hour. we are getting future events and late events. so, we are having multiple segments for 1 hour (some time 100)

We are using kafka-emitter for matrices.

below matrices are generated for each segments:

1. query/wait/time
   
2. query/segmentAndCache/time
   
3. query/segment/time
   

I want to disable those matrices.

I changed `druid.monitoring.monitors` configuration. but it is but working.

I kept only one value in it.

druid.monitoring.monitors=["org.apache.druid.java.util.metrics.JvmCpuMonitor"]

still it is emitting all matrices. I tested druid.monitoring.monitors into both configuration files, `runtime.properties` and `common.runtime.properties`

Thanks,

Mrugesh Kadia

[Mrugesh Kadia]

I changed `druid.monitoring.monitors` configuration. but it is but working.

but it is not but working

[Sergio Ferragut]

Query metrics are not configured through monitors, they are emitted when emission is turned on. 

But what emitter are you using? Some of the emitters have a whitelist of metrics to emit, like the graphite emitter here: https://druid.apache.org/docs/latest/development/extensions-contrib/graphite.html#white-list-based-converter 

[Mrugesh Kadia]

we are using kafka emitter. is there any way to filter/disable some metrics?

[Sergio Ferragut]

No. It does not seem to have that option.

Are you a java programmer?

It is an open source project and that sounds like something cool to add as an option to the extension.

https://github.com/apache/druid/tree/master/extensions-contrib/kafka-emitter