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From "Shai Erera (JIRA)" <j...@apache.org>
Subject [jira] [Resolved] (LUCENE-4769) Add a CountingFacetsAggregator which reads ordinals from a cache
Date Tue, 12 Feb 2013 16:41:13 GMT

     [ https://issues.apache.org/jira/browse/LUCENE-4769?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Shai Erera resolved LUCENE-4769.
--------------------------------

       Resolution: Fixed
    Fix Version/s: 5.0
                   4.2

Committed to trunk and 4x
                
> Add a CountingFacetsAggregator which reads ordinals from a cache
> ----------------------------------------------------------------
>
>                 Key: LUCENE-4769
>                 URL: https://issues.apache.org/jira/browse/LUCENE-4769
>             Project: Lucene - Core
>          Issue Type: New Feature
>          Components: modules/facet
>            Reporter: Shai Erera
>            Assignee: Shai Erera
>             Fix For: 4.2, 5.0
>
>         Attachments: LUCENE-4769.patch, LUCENE-4769.patch, LUCENE-4769.patch
>
>
> Mike wrote a prototype of a FacetsCollector which reads ordinals from a CachedInts structure
on LUCENE-4609. I ported it to the new facets API, as a FacetsAggregator. I think we should
offer users the means to use such a cache, even if it consumes more RAM. Mike tests show that
this cache consumed x2 more RAM than if the DocValues were loaded into memory in their raw
form. Also, a PackedInts version of such cache took almost the same amount of RAM as straight
int[], but the gains were minor.
> I will post the patch shortly.

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