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Posted to dev@lucene.apache.org by "Robert Muir (JIRA)" <ji...@apache.org> on 2013/04/30 05:34:16 UTC

[jira] [Created] (LUCENE-4969) add sort comparator that uses OrdinalMap

Robert Muir created LUCENE-4969:
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             Summary: add sort comparator that uses OrdinalMap
                 Key: LUCENE-4969
                 URL: https://issues.apache.org/jira/browse/LUCENE-4969
             Project: Lucene - Core
          Issue Type: New Feature
            Reporter: Robert Muir


OrdinalMap (LUCENE-4795, SOLR-4490) lets you trade off reopen time for faster faceting: it maps per-segment ordinals to a "global" space based on deviation from expected deltas.

We could add a sort comparator to the sandbox or similar that uses this, especially in the case you are using this for faceting anyway: you can then safely offload all terms bytes to disk (DiskDV) and still have performant sorting and faceting.

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