[jira] [Created] (KAFKA-12428) Add a last-heartbeat-seconds-ago metric to Kafka Consumer

["Guozhang Wang (Jira)" <ji...@apache.org>]

Guozhang Wang created KAFKA-12428:
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             Summary: Add a last-heartbeat-seconds-ago metric to Kafka Consumer
                 Key: KAFKA-12428
                 URL: https://issues.apache.org/jira/browse/KAFKA-12428
             Project: Kafka
          Issue Type: Improvement
          Components: consumer
            Reporter: Guozhang Wang


I have encountered several issues in the past where heartbeat requests are not sent [1,2] (either in time, or ever), and today it is a bit hard to get to that from the logs. I think it is better to add a metric as "last-heartbeat-seconds-ago" where when rebalances were triggered we can immediately find out if this is the root cause.

1. https://issues.apache.org/jira/browse/KAFKA-10793
2. https://issues.apache.org/jira/browse/KAFKA-10827



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