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From "Adrien Grand (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (LUCENE-5119) DiskDV SortedDocValues shouldnt hold doc-to-ord in heap memory
Date Fri, 19 Jul 2013 07:24:48 GMT

    [ https://issues.apache.org/jira/browse/LUCENE-5119?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13713408#comment-13713408
] 

Adrien Grand commented on LUCENE-5119:
--------------------------------------

+1 I think it makes sense to make DiskDV deserve its name and store everything on disk.
                
> DiskDV SortedDocValues shouldnt hold doc-to-ord in heap memory
> --------------------------------------------------------------
>
>                 Key: LUCENE-5119
>                 URL: https://issues.apache.org/jira/browse/LUCENE-5119
>             Project: Lucene - Core
>          Issue Type: Bug
>            Reporter: Robert Muir
>         Attachments: LUCENE-5119.patch
>
>
> These are accessed sequentially when e.g. faceting, and can be a fairly large amount
of data (based on # of docs and # of unique terms). 
> I think this was done so that conceptually "random" access to a specific docid would
be faster than eg. stored fields, but I think we should instead target the DV datastructures
towards real use cases (faceting,sorting,grouping,...)

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