A question about why bin/kafka-consumer-groups.sh can print the lag but burrow can't
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Description
There is a question that I can use bin/kafka-consumer-groups.sh --zookeeper xxx:2181 xxx:2181 xxx:2181 --describe --group group-demo to check the lag ,but using curl -s http://10.80.11.178:8000/v3/kafka/local/consumer/group-demo/lag can't print the lag,it prints "{"error":false,"message":"consumer status returned","status":{"cluster":"local","group":"group-demo","status":"NOTFOUND","complete":1,"partitions":[],"partition_count":0,"maxlag":null,"totallag":0},"request":{"url":"/v3/kafka/local/consumer/group-demo/lag","host":"newsclient-kafka-mq178v11-taiji"}}"
I want konw why and how to resolve it,thank you.
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Research direction
Start by reproducing the bin/kafka-consumer-groups.sh command and the /v3/kafka/local/consumer/group-demo/lag request, then compare how each observes the consumer group. Investigate the returned NOTFOUND status and empty partitions. Done means the discrepancy's cause and resolution are documented, with the Burrow endpoint behavior verified.
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Assessment
- Tech stack
- go, kafka
- Domain
- distributed-systems
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Needs clarification
- Newbie friendliness
- 25/100