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Date: Thu, 25 Nov 2010 08:08:13 -0500 (EST)
From: "Trejkaz (JIRA)" <jira@apache.org>
To: dev@lucene.apache.org
Subject: [jira] Commented: (LUCENE-2348) DuplicateFilter incorrectly handles
 multiple calls to getDocIdSet for segment readers
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    [ https://issues.apache.org/jira/browse/LUCENE-2348?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12935748#action_12935748 ] 

Trejkaz commented on LUCENE-2348:
---------------------------------

I don't really want to argue good or bad design, because the fact is that it worked, and then Lucene core broke the functionality, and now you are claiming that some kinds of filter shouldn't be done as a filter anymore (what should they be done as, then?  I've already said that the other suggestions won't work in any fashion.)

But fine.

This wasn't the only filter in our system affected by this issue.  As long as LUCENE-2506 is put through, though, the rest of our filters which are _not_ "bad design" will still be able to work in the future without hacks on our end to make them work.
 

> DuplicateFilter incorrectly handles multiple calls to getDocIdSet for segment readers
> -------------------------------------------------------------------------------------
>
>                 Key: LUCENE-2348
>                 URL: https://issues.apache.org/jira/browse/LUCENE-2348
>             Project: Lucene - Java
>          Issue Type: Bug
>          Components: contrib/*
>    Affects Versions: 2.9.2
>            Reporter: Trejkaz
>         Attachments: LUCENE-2348.patch, LUCENE-2348.patch
>
>
> DuplicateFilter currently works by building a single doc ID set, without taking into account that getDocIdSet() will be called once per segment and only with each segment's local reader.

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