[jira] [Created] (LUCENE-5127) FixedGapTermsIndex should use monotonic compression

["Robert Muir (JIRA)" <ji...@apache.org>]

Robert Muir created LUCENE-5127:
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             Summary: FixedGapTermsIndex should use monotonic compression
                 Key: LUCENE-5127
                 URL: https://issues.apache.org/jira/browse/LUCENE-5127
             Project: Lucene - Core
          Issue Type: Improvement
            Reporter: Robert Muir
         Attachments: LUCENE-5127.patch

for the addresses in the big in-memory byte[] and disk blocks, we could save a good deal of RAM here.

I think this codec just never got upgraded when we added these new packed improvements, but it might be interesting to try to use for the terms data of sorted/sortedset DV implementations.

patch works, but has nocommits and currently ignores the divisor. The annoying problem there being that we have the shared interface with "get(int)" for PackedInts.Mutable/Reader, but no equivalent base class for monotonics get(long)... 

Still its enough that we could benchmark/compare for now.

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