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https://issues.apache.org/jira/browse/CASSANDRA-5492?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13636734#comment-13636734
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Jonathan Ellis commented on CASSANDRA-5492:
-------------------------------------------

Pushed to github.com/jbellis/cassandra/commits/5492-2

Second commit adds ScrubTest back, minus testScrubFile that appears to have 
relied on a bogus bloom filter, which is now skipped on the read path.
                
> Backport row-level bloom filter removal to 1.2
> ----------------------------------------------
>
>                 Key: CASSANDRA-5492
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-5492
>             Project: Cassandra
>          Issue Type: Improvement
>          Components: Core
>    Affects Versions: 1.2.0
>            Reporter: Jonathan Ellis
>            Assignee: Jonathan Ellis
>            Priority: Minor
>             Fix For: 1.2.5
>
>
> With the possible presence of range tombstones, it is erroneous to skip 
> checking for a given column in SSTableNamesIterator because the bloom filter 
> says it is not there.
> This is fixed by CASSANDRA-5487, which ignores the BF, but it's a shame to 
> leave unused bloom filters cluttering up the row cache.
> If it's too risky to do a full backport we can just substitute an 
> AlwaysPresentFilter in RIE.create, but I think the code removal is fairly 
> straightforward.

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