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From "Simon Willnauer (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (LUCENE-4511) TermsFilter might return wrong results if a field is not indexed or not present in the index
Date Wed, 31 Oct 2012 13:11:13 GMT

    [ https://issues.apache.org/jira/browse/LUCENE-4511?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13487742#comment-13487742
] 

Simon Willnauer commented on LUCENE-4511:
-----------------------------------------

bq. Well I suspect TermsFilter is often used with many terms, at which
point prefix coding will usually reduce memory required.

the main point here is reducing # of objects really. In lucene we often focus on reducing
the memory footprint but even if we don't safe much here we are still friendly in terms of
GC which is my main concern. so that is also why I don't care too much about the prefix coded
stuff. Yet we should consolidate this. I will open another issue.

bq. Hmm maybe add an explicit test for the "no terms provided" case?
I will add one before I commit. I don't think we should be smart here. Its likely a bug if
nothing is provided.
                
> TermsFilter might return wrong results if a field is not indexed or not present in the
index
> --------------------------------------------------------------------------------------------
>
>                 Key: LUCENE-4511
>                 URL: https://issues.apache.org/jira/browse/LUCENE-4511
>             Project: Lucene - Core
>          Issue Type: Bug
>          Components: modules/other
>    Affects Versions: 4.0, 4.1, 5.0
>            Reporter: Simon Willnauer
>            Assignee: Simon Willnauer
>             Fix For: 4.1, 5.0
>
>         Attachments: LUCENE-4511.patch, LUCENE-4511.patch, LUCENE-4511.patch, LUCENE-4511.patch,
LUCENE-4511.patch
>
>
> TermsFilter returns if a term returns null from AIR#terms(term) while it should just
continue. I will upload a test & fix shortly

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