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https://issues.apache.org/jira/browse/KAFKA-5166?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15997793#comment-15997793
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Matthias J. Sax commented on KAFKA-5166:
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No problem.
(1) Internal topics: we need to reset the offsets because they do not get
delete when we delete the topic. Thus, when the app restarts it would otherwise
pick up those old offset (at least this was the behavior when we created the
reset tool. I know that there is a JIRA to actually delete the offsets when a
topic is delete -- but I am not sure if this JIRA is resolved already. Might be
worth to double check :))
(2) Streams internally used consumer uses the {{application.id}} as
{{group.id}} -- it's a fixed one-to-one mapping.
> Add option "dry run" to Streams application reset tool
> ------------------------------------------------------
>
> Key: KAFKA-5166
> URL: https://issues.apache.org/jira/browse/KAFKA-5166
> Project: Kafka
> Issue Type: Improvement
> Components: streams, tools
> Affects Versions: 0.10.2.0
> Reporter: Matthias J. Sax
> Assignee: Bharat Viswanadham
> Priority: Minor
> Labels: needs-kip
>
> We want to add an option to Streams application reset tool, that allow for a
> "dry run". Ie, only prints what topics would get modified/deleted without
> actually applying any actions.
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