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https://issues.apache.org/jira/browse/LUCENE-2348?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Robert Muir updated LUCENE-2348:
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Attachment: LUCENE-2348.patch
Here's my proposed patch for this issue.
In truth I don't think this functionality makes much sense as a filter, but I
think
we should simply solve it in this way.
If the end result is to collapse duplicates in search results, we should
seriously
consider pointing people at field collapsing or maybe doing this in a collector.
> 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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