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https://issues.apache.org/jira/browse/KAFKA-12186?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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zhifeng.peng updated KAFKA-12186:
---------------------------------
Description:
TotalFetchRequestsPerSec: kafka.server:type=BrokerTopicMetrics,
name=TotalFetchRequestsPerSec
Fetch: kafka.network:type=RequestMetrics, name=RequestsPerSec, request=Fetch
FetchFollower: kafka.network:type=RequestMetrics, name=RequestsPerSec,
request=FetchFollower
I found a big difference between TotalFetchRequestsPerSec and sum of Fetch and
FetchFollower Request Rate.
I don't know why topic-[2-10] has no Byte in/Out, but metric tell that
TotalFetchRequestsPerSec of topic-[2-10] >0.
TotalFetchRequestsPerSec for all topic:
!image-2021-01-13-18-59-52-273.png!
broker fetch and fetchFollower rate:
!image-2021-01-13-19-00-22-997.png!
This is easy to reproduce, TotalFetchRequestsPerSec always more than sum of
Fetch and FetchFollower rate.
was:
TotalFetchRequestsPerSec: kafka.server:type=BrokerTopicMetrics,
name=TotalFetchRequestsPerSec
Fetch: kafka.network:type=RequestMetrics, name=RequestsPerSec, request=Fetch
FetchFollower: kafka.network:type=RequestMetrics, name=RequestsPerSec,
request=FetchFollower
I found a big difference between TotalFetchRequestsPerSec and sum of Fetch and
FetchFollower Request Rate.
TotalFetchRequestsPerSec for all topic:
!image-2021-01-13-18-59-52-273.png!
broker fetch and fetchFollower rate:
!image-2021-01-13-19-00-22-997.png!
This is easy to reproduce, TotalFetchRequestsPerSec always more than sum of
Fetch and FetchFollower rate.
> TotalFetchRequestsPerSec not equal to sum of Fetch and FetchFollower Request
> Rate
> ---------------------------------------------------------------------------------
>
> Key: KAFKA-12186
> URL: https://issues.apache.org/jira/browse/KAFKA-12186
> Project: Kafka
> Issue Type: Bug
> Components: metrics, network
> Affects Versions: 2.1.1, 2.7.0
> Reporter: zhifeng.peng
> Priority: Minor
> Attachments: image-2021-01-13-18-59-52-273.png,
> image-2021-01-13-19-00-22-997.png
>
>
> TotalFetchRequestsPerSec: kafka.server:type=BrokerTopicMetrics,
> name=TotalFetchRequestsPerSec
> Fetch: kafka.network:type=RequestMetrics, name=RequestsPerSec, request=Fetch
> FetchFollower: kafka.network:type=RequestMetrics, name=RequestsPerSec,
> request=FetchFollower
> I found a big difference between TotalFetchRequestsPerSec and sum of Fetch
> and FetchFollower Request Rate.
> I don't know why topic-[2-10] has no Byte in/Out, but metric tell that
> TotalFetchRequestsPerSec of topic-[2-10] >0.
>
> TotalFetchRequestsPerSec for all topic:
> !image-2021-01-13-18-59-52-273.png!
> broker fetch and fetchFollower rate:
> !image-2021-01-13-19-00-22-997.png!
>
> This is easy to reproduce, TotalFetchRequestsPerSec always more than sum of
> Fetch and FetchFollower rate.
>
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