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https://issues.apache.org/jira/browse/CASSANDRA-14823?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16648595#comment-16648595
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Blake Eggleston commented on CASSANDRA-14823:
---------------------------------------------

[~benedict] [~iamaleksey] would one (or both) of you mind taking a look at this 
as well?

> Legacy sstables with range tombstones spanning multiple index blocks create 
> invalid bound sequences on 3.0+
> -----------------------------------------------------------------------------------------------------------
>
>                 Key: CASSANDRA-14823
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-14823
>             Project: Cassandra
>          Issue Type: Bug
>            Reporter: Blake Eggleston
>            Assignee: Blake Eggleston
>            Priority: Major
>             Fix For: 3.0.x, 3.11.x
>
>
> During upgrade from 2.1 to 3.0, reading old sstables in reverse order would 
> generate invalid sequences of range tombstone bounds if their range 
> tombstones spanned multiple column index blocks. The read fails in different 
> ways depending on whether the 2.1 tables were produced by a flush or a 
> compaction.



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