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https://issues.apache.org/jira/browse/LUCENE-5178?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13756430#comment-13756430
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Shai Erera commented on LUCENE-5178:
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I manage to reproduce it only if I set both tests.seed and
tests.postingsformat. What I see is that Lucene42DVProducer is used, which
returns MatchAllBits (it supports only SortedSet?), which leads to the
incorrect counts. The initialized Codec is Lucene45Codec, which returns
Lucene42DVF. The test does use defaultCodecSupportsDocsWithField(), but the
latter only asserts that the name of the Codec is not "40", "41", "42", yet it
does not check if the DVF supports it. That seems wrong?
> doc values should expose missing values (or allow configurable defaults)
> ------------------------------------------------------------------------
>
> Key: LUCENE-5178
> URL: https://issues.apache.org/jira/browse/LUCENE-5178
> Project: Lucene - Core
> Issue Type: Improvement
> Reporter: Yonik Seeley
> Fix For: 5.0, 4.5
>
> Attachments: LUCENE-5178.patch, LUCENE-5178_reintegrate.patch
>
>
> DocValues should somehow allow a configurable default per-field.
> Possible implementations include setting it on the field in the document or
> registration of an IndexWriter callback.
> If we don't make the default configurable, then another option is to have
> DocValues fields keep track of whether a value was indexed for that document
> or not.
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