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https://issues.apache.org/jira/browse/LUCENE-1507?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12667523#action_12667523
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Yonik Seeley commented on LUCENE-1507:
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Instead of adding another class, couldn't an application simply use a single
SortedVIntList of size zero? One could cache it and use it for all empty
filters if space were really an issue (i.e. millions of filters).
> adding EmptyDocIdSet/Iterator
> -----------------------------
>
> Key: LUCENE-1507
> URL: https://issues.apache.org/jira/browse/LUCENE-1507
> Project: Lucene - Java
> Issue Type: Improvement
> Components: Search
> Affects Versions: 2.4
> Reporter: John Wang
> Attachments: emptydocidset.txt
>
> Original Estimate: 1h
> Remaining Estimate: 1h
>
> Adding convenience classes for EmptyDocIdSet and EmptyDocIdSetIterator
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