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From "Yonik Seeley (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (LUCENE-3210) TieredMergePolicy should expose control over how aggressively segments with deletions are targeted
Date Fri, 17 Jun 2011 15:50:47 GMT

    [ https://issues.apache.org/jira/browse/LUCENE-3210?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13051147#comment-13051147
] 

Yonik Seeley commented on LUCENE-3210:
--------------------------------------

Good idea... +1 for a power factor above 1.

> TieredMergePolicy should expose control over how aggressively segments with deletions
are targeted 
> ---------------------------------------------------------------------------------------------------
>
>                 Key: LUCENE-3210
>                 URL: https://issues.apache.org/jira/browse/LUCENE-3210
>             Project: Lucene - Java
>          Issue Type: Improvement
>          Components: core/index
>            Reporter: Michael McCandless
>            Assignee: Michael McCandless
>            Priority: Minor
>             Fix For: 3.3, 4.0
>
>
> TMP today always does a linear pro-rating of a merge's score according to what pctg of
the documents are deleted; I'd like to 1) put a power factor in (score is multiplicative),
and 2) default it to stronger favoring of merging away deletions.

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