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From "Commit Tag Bot (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (LUCENE-4769) Add a CountingFacetsAggregator which reads ordinals from a cache
Date Tue, 12 Feb 2013 16:49:12 GMT

    [ https://issues.apache.org/jira/browse/LUCENE-4769?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13576766#comment-13576766
] 

Commit Tag Bot commented on LUCENE-4769:
----------------------------------------

[branch_4x commit] Shai Erera
http://svn.apache.org/viewvc?view=revision&revision=1445251

LUCENE-4769: Add a CountingFacetsAggregator which reads ordinals from a cache

                
> 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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