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From "Koji Sekiguchi (JIRA)" <j...@apache.org>
Subject [jira] Commented: (LUCENE-2482) Index sorter
Date Wed, 29 Sep 2010 01:12:33 GMT

    [ https://issues.apache.org/jira/browse/LUCENE-2482?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12915993#action_12915993
] 

Koji Sekiguchi commented on LUCENE-2482:
----------------------------------------

I think this is an interesting tool. I'm wondering if Solr can call it, as Solr does merge
indexes. 

Is there any restrictions on this? I've never looked into deeper it, but for example, I see
isPayloadAvailable() returns always false. Does it mean that it doesn't support payload?
Can it support multiple Sorts on indexed fields other than stored float field?

> Index sorter
> ------------
>
>                 Key: LUCENE-2482
>                 URL: https://issues.apache.org/jira/browse/LUCENE-2482
>             Project: Lucene - Java
>          Issue Type: New Feature
>          Components: contrib/*
>    Affects Versions: 3.1, 4.0
>            Reporter: Andrzej Bialecki 
>            Assignee: Andrzej Bialecki 
>             Fix For: 3.1
>
>         Attachments: indexSorter.patch
>
>
> A tool to sort index according to a float document weight. Documents with high weight
are given low document numbers, which means that they will be first evaluated. When using
a strategy of "early termination" of queries (see TimeLimitedCollector) such sorting significantly
improves the quality of partial results.
> (Originally this tool was created by Doug Cutting in Nutch, and used norms as document
weights - thus the ordering was limited by the limited resolution of norms. This is a pure
Lucene version of the tool, and it uses arbitrary floats from a specified stored field).

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