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https://issues.apache.org/jira/browse/CASSANDRA-8340?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14567181#comment-14567181
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Etienne Adam commented on CASSANDRA-8340:
-----------------------------------------

I didn't know DTCS and read repair were incompatible.. But I can still run 
nodetool repair, isn'it ?

>From my understanding of Cassandra, read repair or nodetool repair are 
>mandatory to have a sane cluster over time.. Am I wrong ?

> Use sstable min timestamp when deciding if an sstable should be included in 
> DTCS compactions
> --------------------------------------------------------------------------------------------
>
>                 Key: CASSANDRA-8340
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-8340
>             Project: Cassandra
>          Issue Type: Improvement
>            Reporter: Marcus Eriksson
>            Priority: Minor
>         Attachments: 8340-v2.diff, 8340.diff
>
>
> Currently we check how old the newest data (max timestamp) in an sstable is 
> when we check if it should be compacted.
> If we instead switch to using min timestamp for this we have a pretty clean 
> migration path from STCS/LCS to DTCS. 
> My thinking is that before migrating, the user does a major compaction, which 
> creates a huge sstable containing all data, with min timestamp very far back 
> in time, then switching to DTCS, we will have a big sstable that we never 
> compact (ie, min timestamp of this big sstable is before 
> max_sstable_age_days), and all newer data will be after that, and that new 
> data will be properly compacted
> WDYT [~Bj0rn] ?



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