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https://issues.apache.org/jira/browse/CASSANDRA-13257?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15925864#comment-15925864
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Yuki Morishita commented on CASSANDRA-13257:
--------------------------------------------

I wonder what is the usage of "Perform preview on repaired 
data"/{{PreviewKind.REPAIRED}}.

I kind of want to separate context of "preview streaming" and "preview repair". 
So I'd like to keep {{PreviewKind}} in repair package, and have boolean 
{{isPreview}} in streaming. It seems to me that the reason we have 
{{PreviewKind}} in streaming right now is to add above functionality.


> Add repair streaming preview
> ----------------------------
>
>                 Key: CASSANDRA-13257
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-13257
>             Project: Cassandra
>          Issue Type: New Feature
>          Components: Streaming and Messaging
>            Reporter: Blake Eggleston
>            Assignee: Blake Eggleston
>             Fix For: 4.0
>
>
> It would be useful to be able to estimate the amount of repair streaming that 
> needs to be done, without actually doing any streaming. Our main motivation 
> for this having something this is validating CASSANDRA-9143 in production, 
> but I’d imagine it could also be a useful tool in troubleshooting.



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