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From "Adrien Grand (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (LUCENE-4538) Cache DocValues DirecSource
Date Mon, 05 Nov 2012 13:58:15 GMT

    [ https://issues.apache.org/jira/browse/LUCENE-4538?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13490638#comment-13490638
] 

Adrien Grand commented on LUCENE-4538:
--------------------------------------

bq. We can certainly reduce the overhead (maybe different issue)

Are you speaking about the PackedInts headers?
                
> Cache DocValues DirecSource 
> ----------------------------
>
>                 Key: LUCENE-4538
>                 URL: https://issues.apache.org/jira/browse/LUCENE-4538
>             Project: Lucene - Core
>          Issue Type: Improvement
>          Components: core/codecs
>    Affects Versions: 4.0
>            Reporter: Simon Willnauer
>             Fix For: 4.1, 5.0
>
>         Attachments: LUCENE-4538.patch
>
>
> Currently the user need to make sure that a direct source is not shared between threads
and each time someone calls getDirectSource we create a new source which has a reasonable
overhead. We can certainly reduce the overhead (maybe different issue) but it should be easier
for the user to get a direct source and handle it. More than that is should be consistent
with getSource / loadSource.

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