Jonathan Ellis created CASSANDRA-5492:
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             Summary: 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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