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From "Andrzej Bialecki (JIRA)" <j...@apache.org>
Subject [jira] Created: (HBASE-908) Add approximate counting to CountingBloomFilter
Date Tue, 30 Sep 2008 21:11:44 GMT
Add approximate counting to CountingBloomFilter
-----------------------------------------------

                 Key: HBASE-908
                 URL: https://issues.apache.org/jira/browse/HBASE-908
             Project: Hadoop HBase
          Issue Type: Improvement
          Components: util
    Affects Versions: 0.19.0
            Reporter: Andrzej Bialecki 
             Fix For: 0.19.0


CountingBloomFilter can return approximate count of how many times any particular key was
added to the filter. This means that we can use a CountingBloomFilter like an approximate
map of key->count, for values of count significantly smaller than the bucket size (15 in
this implementation).

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