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From "Robert Muir (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (LUCENE-4752) Merge segments to sort them
Date Sat, 16 Mar 2013 12:00:12 GMT

    [ https://issues.apache.org/jira/browse/LUCENE-4752?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13604219#comment-13604219
] 

Robert Muir commented on LUCENE-4752:
-------------------------------------

{quote}
If there isn't a better (or any other) way to achieve that, then I think we should expose
SegmentMerger. We shouldn't tell people "Lucene doesn't support online sorting of an index
because we didn't want to expose super-expert API". 
{quote}

We absolutely should.
                
> Merge segments to sort them
> ---------------------------
>
>                 Key: LUCENE-4752
>                 URL: https://issues.apache.org/jira/browse/LUCENE-4752
>             Project: Lucene - Core
>          Issue Type: New Feature
>          Components: core/index
>            Reporter: David Smiley
>            Assignee: Adrien Grand
>         Attachments: LUCENE-4752.patch
>
>
> It would be awesome if Lucene could write the documents out in a segment based on a configurable
order.  This of course applies to merging segments to. The benefit is increased locality on
disk of documents that are likely to be accessed together.  This often applies to documents
near each other in time, but also spatially.

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