[jira] [Resolved] (LUCENE-4600) Explore facets aggregation during documents collection

["Shai Erera (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/LUCENE-4600?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Shai Erera resolved LUCENE-4600.
--------------------------------

       Resolution: Fixed
    Fix Version/s: 5.0
                   4.2
    Lucene Fields: New,Patch Available  (was: New)

Committed to trunk and 4x. Let's see if it makes nightly happy! :)
                
> Explore facets aggregation during documents collection
> ------------------------------------------------------
>
>                 Key: LUCENE-4600
>                 URL: https://issues.apache.org/jira/browse/LUCENE-4600
>             Project: Lucene - Core
>          Issue Type: Improvement
>          Components: modules/facet
>            Reporter: Michael McCandless
>            Assignee: Shai Erera
>             Fix For: 4.2, 5.0
>
>         Attachments: LUCENE-4600-cli.patch, LUCENE-4600.patch, LUCENE-4600.patch, LUCENE-4600.patch, LUCENE-4600.patch, LUCENE-4600.patch, LUCENE-4600.patch, LUCENE-4600.patch
>
>
> Today the facet module simply gathers all hits (as a bitset, optionally with a float[] to hold scores as well, if you will aggregate them) during collection, and then at the end when you call getFacetsResults(), it makes a 2nd pass over all those hits doing the actual aggregation.
> We should investigate just aggregating as we collect instead, so we don't have to tie up transient RAM (fairly small for the bit set but possibly big for the float[]).

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