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https://issues.apache.org/jira/browse/CASSANDRA-10505?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14953209#comment-14953209
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Marcus Eriksson commented on CASSANDRA-10505:
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it is likely CASSANDRA-7953 will fix the compaction issue atleast
> Duplicate range tombstones
> --------------------------
>
> Key: CASSANDRA-10505
> URL: https://issues.apache.org/jira/browse/CASSANDRA-10505
> Project: Cassandra
> Issue Type: Bug
> Components: Core
> Reporter: Brandon Williams
> Fix For: 2.1.x
>
>
> I don't have a way to reproduce this just yet, but I have the sstables to
> prove it and can provide those offline. What I can reproduce, however, is
> the magnification of this problem via compaction. Here's what I know so far:
> * under some condition, we flush the exact same RT more than once in the same
> sstable. Same timestamps, everything.
> * Once this happens in multiple sstables, compacting them causes the
> duplication to grow. The more this occurs, the worse the problem gets.
> This continues until gc_grace has passed, then they are all evicted normally.
> I'd at least like to take a look at the compaction amplification for now,
> that way if the condition does occur, at least compaction can help it, rather
> than exacerbate it.
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