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https://issues.apache.org/jira/browse/CASSANDRA-15655?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17073439#comment-17073439
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Marcus Eriksson commented on CASSANDRA-15655:
---------------------------------------------

attached cci screenshots

> Optionally set nowInSec in the future for validation repairs
> ------------------------------------------------------------
>
>                 Key: CASSANDRA-15655
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-15655
>             Project: Cassandra
>          Issue Type: Improvement
>          Components: Consistency/Repair
>            Reporter: Marcus Eriksson
>            Assignee: Marcus Eriksson
>            Priority: Normal
>             Fix For: 4.0-alpha
>
>         Attachments: Screenshot 2020-04-02 at 09.07.41.png, Screenshot 
> 2020-04-02 at 09.07.54.png, Screenshot 2020-04-02 at 09.08.27.png
>
>
> There is a race when running validation repairs where we might build merkle 
> trees on one node, have gcgs expire, tombstones get compacted out and then 
> build merkle trees on other nodes, causing false positive preview repair 
> mismatch



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