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https://issues.apache.org/jira/browse/KAFKA-12428?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17310964#comment-17310964
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Guozhang Wang commented on KAFKA-12428:
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Just realized it is already added, I'm going to close this ticket. Sorry for
the confusion!
> 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, streams
> Reporter: Guozhang Wang
> Priority: Major
> Labels: newbie++
>
> 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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