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https://issues.apache.org/jira/browse/CASSANDRA-5487?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13636671#comment-13636671
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Jason Brown commented on CASSANDRA-5487:
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latest fix confirmed from 1.1 upgrade scenario. code lgtm. ship it!
                
> Promote row-level tombstones to index file
> ------------------------------------------
>
>                 Key: CASSANDRA-5487
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-5487
>             Project: Cassandra
>          Issue Type: Improvement
>          Components: Core
>    Affects Versions: 1.2.0
>            Reporter: Jonathan Ellis
>            Assignee: Jonathan Ellis
>             Fix For: 2.0
>
>         Attachments: 5487.txt
>
>
> The idea behind promoted indexes (CASSANDRA-2319) was we could skip a seek to 
> the row header by keeping the column index in the index file.  But, we skip 
> writing the row-level tombstone to the index file unless it also has some 
> column data.  So unless we read the tombstone from the data file (where it is 
> guaranteed to exist) we can return incorrect results.

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