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From "huxihx (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (KAFKA-6184) report a metric of the lag between the consumer offset and the start offset of the log
Date Thu, 09 Nov 2017 09:01:00 GMT

    [ https://issues.apache.org/jira/browse/KAFKA-6184?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16245394#comment-16245394
] 

huxihx commented on KAFKA-6184:
-------------------------------

KIP created. See https://cwiki.apache.org/confluence/display/KAFKA/KIP-223+-+Add+per-topic+min+lead+and+per-partition+lead+metrics+to+KafkaConsumer

> 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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