[jira] Updated: (LUCENE-1541) Trie range - make trie range indexing more flexible

["Michael McCandless (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/LUCENE-1541?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Michael McCandless updated LUCENE-1541:
---------------------------------------

    Fix Version/s:     (was: 2.9)
                   3.1

OK, moving out to 3.1.

> Trie range - make trie range indexing more flexible
> ---------------------------------------------------
>
>                 Key: LUCENE-1541
>                 URL: https://issues.apache.org/jira/browse/LUCENE-1541
>             Project: Lucene - Java
>          Issue Type: Improvement
>          Components: contrib/*
>    Affects Versions: 2.9
>            Reporter: Ning Li
>            Assignee: Uwe Schindler
>            Priority: Minor
>             Fix For: 3.1
>
>         Attachments: LUCENE-1541.patch, LUCENE-1541.patch
>
>
> In the current trie range implementation, a single precision step is specified. With a large precision step (say 8), a value is indexed in fewer terms (8) but the number of terms for a range can be large. With a small precision step (say 2), the number of terms for a range is smaller but a value is indexed in more terms (32).
> We want to add an option that different precision steps can be set for different precisions. An expert can use this option to keep the number of terms for a range small and at the same time index a value in a small number of terms. See the discussion in LUCENE-1470 that results in this issue.

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