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https://issues.apache.org/jira/browse/LUCENE-1613?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12702691#action_12702691
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John Wang commented on LUCENE-1613:
-----------------------------------
Michael: We ran into this actually in facet search. When there is a null
search, instead of counting on results on a MatchAllDocsQuery, we were just
using docFreq() method to avoid facet counting. The problem came with there
were updates. We did get around it, but was rather cumbersome.
I agree the fix is non-trivial, just wanted to open up an issue for tracking
purposes incase we think of some thing.
> TermEnum.docFreq() is not updated with there are deletes
> --------------------------------------------------------
>
> Key: LUCENE-1613
> URL: https://issues.apache.org/jira/browse/LUCENE-1613
> Project: Lucene - Java
> Issue Type: Bug
> Components: Search
> Affects Versions: 2.4
> Reporter: John Wang
> Attachments: TestDeleteAndDocFreq.java
>
>
> TermEnum.docFreq is used in many places, especially scoring. However, if
> there are deletes in the index and it is not yet merged, this value is not
> updated.
> Attached is a test case.
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