[jira] [Commented] (KAFKA-6314) Add a tool to delete kafka based consumer offsets for a given group

["Tom Scott (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/KAFKA-6314?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16283277#comment-16283277 ] 

Tom Scott commented on KAFKA-6314:
----------------------------------

thank, I've modified it to reference kafka based offsets

> Add a tool to delete kafka based consumer offsets for a given group
> -------------------------------------------------------------------
>
>                 Key: KAFKA-6314
>                 URL: https://issues.apache.org/jira/browse/KAFKA-6314
>             Project: Kafka
>          Issue Type: New Feature
>          Components: consumer, core, tools
>            Reporter: Tom Scott
>            Priority: Minor
>
> Add a tool to delete kafka based consumer offsets for a given group similar to the reset tool. It could look something like this:
> kafka-consumer-groups --bootstrap-server localhost:9092 --delete-offsets --group somegroup
> The case for this is as follows:
> 1. Consumer group with id: group1 subscribes to topic1
> 2. The group is stopped 
> 3. The subscription changed to topic2 but the id is kept as group1
> Now the out output of kafka-consumer-groups --describe for the group will show topic1 even though the group is not subscribed to that topic. This is bad for monitoring as it will show lag on topic1.



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