Michael McCandless created LUCENE-4764:
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             Summary: Faster but more RAM/Disk consuming DocValuesFormat for 
facets
                 Key: LUCENE-4764
                 URL: https://issues.apache.org/jira/browse/LUCENE-4764
             Project: Lucene - Core
          Issue Type: Improvement
            Reporter: Michael McCandless
             Fix For: 4.2, 5.0


The new default DV format for binary fields has much more
RAM-efficient encoding of the address for each document ... but it's
also a bit slower at decode time, which affects facets because we
decode for every collected docID.


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