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From "Michael McCandless (JIRA)" <j...@apache.org>
Subject [jira] Assigned: (LUCENE-2356) Enable setting the terms index divisor used by IndexWriter whenever it opens internal readers
Date Tue, 01 Jun 2010 23:43:38 GMT

     [ https://issues.apache.org/jira/browse/LUCENE-2356?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Michael McCandless reassigned LUCENE-2356:
------------------------------------------

    Assignee: Michael McCandless

> Enable setting the terms index divisor used by IndexWriter whenever it opens internal
readers
> ---------------------------------------------------------------------------------------------
>
>                 Key: LUCENE-2356
>                 URL: https://issues.apache.org/jira/browse/LUCENE-2356
>             Project: Lucene - Java
>          Issue Type: Bug
>          Components: Index
>            Reporter: Michael McCandless
>            Assignee: Michael McCandless
>             Fix For: 2.9.3, 3.0.2, 3.1, 4.0
>
>         Attachments: LUCENE-2356.patch
>
>
> Opening a place holder issue... if all the refactoring being discussed don't make this
possible, then we should add a setting to IWC to do so.
> Apps with very large numbers of unique terms must set the terms index divisor to control
RAM usage.
> (NOTE: flex's RAM terms dict index RAM usage is more efficient, so this will help such
apps).
> But, when IW resolves deletes internally it always uses default 1 terms index divisor,
and the app cannot change that.  Though one workaround is to call getReader(termInfosIndexDivisor)
which will pool the reader with the right divisor.

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