Kafka - Monitoring and Operations
You want to monitor Kafka consumer lag using JMX metrics. Which ObjectName pattern should you use to query all consumer lag metrics for all topics?
You want to monitor Kafka consumer lag using JMX metrics. Which ObjectName pattern should you use to query all consumer lag metrics for all topics?
hard🚀 Application Q8 of Q15
Step-by-Step Solution
Solution:
Step 1: Identify correct JMX domain and type for consumer lag
Consumer lag metrics are under kafka.consumer with type consumer-fetch-manager-metrics.Step 2: Use wildcards for client-id and topic to get all metrics
Using client-id=* and topic=* matches all consumers and topics.Final Answer:
"kafka.consumer:type=consumer-fetch-manager-metrics,client-id=*,topic=*" -> Option CQuick Check:
Consumer lag pattern = kafka.consumer with wildcards [OK]
Quick Trick: Use wildcards in ObjectName to query multiple metrics [OK]
Common Mistakes:
MISTAKES- Using wrong domain like kafka.server
- Missing topic wildcard
- Using non-existent type names
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