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https://issues.apache.org/jira/browse/KAFKA-5855?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16160964#comment-16160964
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Mohsen Zainalpour commented on KAFKA-5855:
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Thanks. Actually It was my misunderstanding. Consumer is able to calculate lags
on each "fetch" request and in my application it takes more time to consume
messages and make a new fetch request. Therefore, I was not able to see the
actual lags.
I am going to resolve the issue
> records-lag is always zero
> --------------------------
>
> Key: KAFKA-5855
> URL: https://issues.apache.org/jira/browse/KAFKA-5855
> Project: Kafka
> Issue Type: Bug
> Components: consumer, metrics
> Affects Versions: 0.10.1.0, 0.11.0.0
> Reporter: Mohsen Zainalpour
> Priority: Minor
>
> I use Prometheus JmxExporter to export Kafka consumer metrics but the value
> of records-lag is always zero.
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