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Posted to jira@kafka.apache.org by "huxihx (JIRA)" <ji...@apache.org> on 2017/11/09 08:14:00 UTC

[jira] [Updated] (KAFKA-6184) report a metric of the lag between the consumer offset and the start offset of the log

     [ https://issues.apache.org/jira/browse/KAFKA-6184?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

huxihx updated KAFKA-6184:
--------------------------
    Labels: needs-kip  (was: )

> report a metric of the lag between the consumer offset and the start offset of the log
> --------------------------------------------------------------------------------------
>
>                 Key: KAFKA-6184
>                 URL: https://issues.apache.org/jira/browse/KAFKA-6184
>             Project: Kafka
>          Issue Type: Improvement
>    Affects Versions: 1.0.0
>            Reporter: Jun Rao
>            Assignee: Vahid Hashemian
>              Labels: needs-kip
>
> Currently, the consumer reports a metric of the lag between the high watermark of a log and the consumer offset. It will be useful to report a similar lag metric between the consumer offset and the start offset of the log. If this latter lag gets close to 0, it's an indication that the consumer may lose data soon.



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