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From "Michael McCandless (JIRA)" <>
Subject [jira] [Updated] (LUCENE-6766) Make index sorting a first-class citizen
Date Tue, 10 May 2016 09:48:13 GMT


Michael McCandless updated LUCENE-6766:
    Attachment: LUCENE-6766.patch

I think this is ready ... here's the current patch against master.

I still need to run "first do no harm" indexing performance tests to
make sure there is not too much of a hit when indexing without an
index sort.

I don't plan to rush this in for 6.1 ... I'll commit to master, and
after we release 6.1 (Soon I think?: so many geo improvements!), I
plan to backport for 6.2.

> Make index sorting a first-class citizen
> ----------------------------------------
>                 Key: LUCENE-6766
>                 URL:
>             Project: Lucene - Core
>          Issue Type: Improvement
>            Reporter: Adrien Grand
>            Priority: Minor
>         Attachments: LUCENE-6766.patch, LUCENE-6766.patch, LUCENE-6766.patch
> Today index sorting is a very expert feature. You need to use a custom merge policy,
custom collectors, etc. I would like to explore making it a first-class citizen so that:
>  - the sort order could be configured on IndexWriterConfig
>  - segments would record the sort order that was used to write them
>  - IndexSearcher could automatically early terminate when computing top docs on a sort
order that is a prefix of the sort order of a segment (and if the user is not interested in

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