[jira] [Created] (KAFKA-7732) Kafka broker lag metrics is more than 0, but no partitions are under replicated

["Mathias Kub (JIRA)" <ji...@apache.org>]

Mathias Kub created KAFKA-7732:
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             Summary: Kafka broker lag metrics is more than 0, but no partitions are under replicated
                 Key: KAFKA-7732
                 URL: https://issues.apache.org/jira/browse/KAFKA-7732
             Project: Kafka
          Issue Type: Bug
          Components: metrics
    Affects Versions: 2.1.0
            Reporter: Mathias Kub
         Attachments: 2018-12-13 17-13-34.flv

Hi,

I just upgraded Kafka from 1.1.1 to 2.1.0 and
{code}
kafka.server:type=ReplicaFetcherManager,name=MaxLag,clientId=Replica
{code}
shows billions of lag, but no partition is under replicated.

{code}
kafka.server:type=FetcherLagMetrics,name=ConsumerLag,clientId=ReplicaFetcherThread-0-2,topic=topicname,partition=1
{code}

shows 0 or - I guess - the offset as lag, depending on when I display the value.

I attached a video demonstrating the problem.



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