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https://issues.apache.org/jira/browse/LUCENE-4242?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13420354#comment-13420354
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roman commented on LUCENE-4242:
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bq. Not sure why you see maxDoc=101 if your segment has 50 docs ... that's odd.
Were you testing against the top-level reader?
I haven't seen it in real, it was more a question. I didn't know if it was
possible to construct a composite reader (with some segments missing) and used
it to get the uninverted cache. As maxDoc was abstract and I wasn't sure about
all the implementations, it made me wonder what maxDoc() would be.
{{1.0f-(numDeletedDocs()/numDocs())}} seemed somewhat less ambiguous then
> UnInverted cache uses term freq to filter out terms (but deleted docs are
> included in the freq count)
> -----------------------------------------------------------------------------------------------------
>
> Key: LUCENE-4242
> URL: https://issues.apache.org/jira/browse/LUCENE-4242
> Project: Lucene - Core
> Issue Type: Bug
> Components: core/index
> Affects Versions: 4.0
> Reporter: roman
> Priority: Minor
> Attachments: LUCENE-4242.patch, LUCENE-4242.patch, LUCENE-4242.patch
>
>
> TermEnum.docFreq() count is used to compute uninverted index
> (DocTermOrds.uninvert()). The code goes like:
> final int df = te.docFreq();
> if (df <= maxTermDocFreq) {
> So, if there are deleted documents in the index and maxTermDocFreq is
> low, then the term will be excluded (even if the freq of the livedocs
> is OK). Most likely, the cache will be incomplete.
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