[KAFKA-10172] [Kafka connect] connectors, tasks metrics doubled

• Type: Bug
• Status: Resolved
• Priority: Critical
• Resolution: Duplicate
• Affects Version/s: 2.4.0, 2.3.1
• Component/s: connect
• Assignee: Unassigned
• Reporter: Viktor Utkin
• Created: 16/Jun/20 09:44
• Updated: 23/Mar/21 01:29
• Resolved: 23/Mar/21 01:29

Description

After re-balance of connect cluster (4 nodes in total) we noticed that metrics

• kafka_connect_connect_worker_metrics_task_count
• kafka_connect_connect_worker_metrics_connector_count

are doubled (2x,3x,4x,etc.), so connect show wrong values.

 

 

But when we request number of connector via RESP API it shows only 36:

› curl -s 127.0.0.1:8083/connectors | jq '.[]' | sort | wc -l
36

Issue Links

• duplicates: KAFKA-9841 Connector and Task duplicated when a worker join with old generation assignment