You are viewing a plain text version of this content. The canonical link for it is here.
Posted to dev@lucene.apache.org by "Michael McCandless (JIRA)" <ji...@apache.org> on 2013/03/10 14:07:13 UTC
[jira] [Commented] (LUCENE-4819) move Sorted[Set]DocValuesTermsEnum
to codec
[ https://issues.apache.org/jira/browse/LUCENE-4819?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13598228#comment-13598228 ]
Michael McCandless commented on LUCENE-4819:
--------------------------------------------
+1
> move Sorted[Set]DocValuesTermsEnum to codec
> -------------------------------------------
>
> Key: LUCENE-4819
> URL: https://issues.apache.org/jira/browse/LUCENE-4819
> Project: Lucene - Core
> Issue Type: Improvement
> Components: core/index
> Reporter: Robert Muir
> Fix For: 4.3
>
> Attachments: LUCENE-4819.patch
>
>
> Currently a user can instantiate a SortedDocValuesTermsEnum(SortedDocValues).
> This is a generic termsenum, implementing all operations by lookupOrd().
> I think instead this should be the default implementation, and we should have e.g. SortedDocValues.termsEnum() that returns it (codec can implement something fancier).
> For example the default codec implements lookupOrd as an FST binary search, which means next() on this termsenum is much slower than it needs to be for the places where this enum is actually used (segment merging, OrdinalMap used for faceting in SOLR-4490 and LUCENE-4795)
> So instead, it can override this method and use an FSTEnum, and these operations are significantly faster (3x faster for me with a simple benchmark with 10M terms).
--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators
For more information on JIRA, see: http://www.atlassian.com/software/jira
---------------------------------------------------------------------
To unsubscribe, e-mail: dev-unsubscribe@lucene.apache.org
For additional commands, e-mail: dev-help@lucene.apache.org