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From "Dan Cooper (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (SOLR-792) Pivot (ie: Decision Tree) Faceting Component
Date Tue, 08 Nov 2011 17:13:53 GMT

    [ https://issues.apache.org/jira/browse/SOLR-792?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13146406#comment-13146406
] 

Dan Cooper commented on SOLR-792:
---------------------------------

I have submitted a patch for distributed pivoting above, however I have since realised that
while it works well on the small sample data it does not scale well.  This is due to the use
of NamedList objects for storing and merging the pivoted data.

I have since improved the code to use maps whilst merging the pivots and it runs well across
our large indexes.  I will submit this again in a few days when I have had time to review
and package up the code properly (there is some proprietary code I need to separate it from).

My company relies on this functionality and we have it working with Solr 4 so we would like
to contribute it back to the community if possible.
                
> Pivot (ie: Decision Tree) Faceting Component
> --------------------------------------------
>
>                 Key: SOLR-792
>                 URL: https://issues.apache.org/jira/browse/SOLR-792
>             Project: Solr
>          Issue Type: New Feature
>            Reporter: Erik Hatcher
>            Assignee: Yonik Seeley
>            Priority: Minor
>         Attachments: SOLR-792-PivotFaceting.patch, SOLR-792-PivotFaceting.patch, SOLR-792-PivotFaceting.patch,
SOLR-792-PivotFaceting.patch, SOLR-792-as-helper-class.patch, SOLR-792-distributed.patch,
SOLR-792-raw-type.patch, SOLR-792.patch, SOLR-792.patch, SOLR-792.patch, SOLR-792.patch, SOLR-792.patch,
SOLR-792.patch, SOLR-792.patch
>
>
> A component to do multi-level faceting.

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