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  1. Lucene - Core
  2. LUCENE-4562

Pair-wise FST key comparator by ords

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    Details

    • Type: New Feature
    • Status: Open
    • Priority: Minor
    • Resolution: Unresolved
    • Affects Version/s: None
    • Fix Version/s: None
    • Component/s: core/FSTs
    • Labels:
      None
    • Lucene Fields:
      New

      Description

      It would be useful to have an FST utility method to do a compare() operation between a key in one FST and a key in a second FST, by ords instead of the keys. So the input is the ord for FST1 and an ord for FST2 and the output is -1, 0, 1. The result is the same as if you were to do a Util.getByOutput for both ords against their respective FSTs then compare the resulting byte arrays.

      The point of this is to speedup LUCENE-3729 further, which impact sorting across segments. I would be surprised if it doesn't have applicability to other problems.

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          is depended upon by

          Improvement - An improvement or enhancement to an existing feature or task. LUCENE-3729 Allow using FST to hold terms data in DocValues.BYTES_*_SORTED

          • Major - Major loss of function.
          • Closed

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              • Assignee:
                Unassigned
                Reporter:
                dsmiley David Smiley
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                Dates

                • Created:
                  Updated: