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Posted to dev@lucene.apache.org by "Michael McCandless (JIRA)" <ji...@apache.org> on 2013/04/30 13:10:16 UTC
[jira] [Commented] (LUCENE-4969) add sort comparator that uses
OrdinalMap
[ https://issues.apache.org/jira/browse/LUCENE-4969?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13645467#comment-13645467 ]
Michael McCandless commented on LUCENE-4969:
--------------------------------------------
+1
> 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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