SegmentReader.getFieldNames ignores FieldOption.DOC_VALUES
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Key: LUCENE-3623
URL: https://issues.apache.org/jira/browse/LUCENE-3623
Project: Lucene - Java
Issue Type: Bug
Affects Versions: 4.0
Reporter: Robert Muir
we use this getFieldNames api in segmentmerger if we merge something that isn't
a SegmentReader (e.g. FilterIndexReader)
it looks to me that if you use a FilterIndexReader, call addIndexes(Reader...)
the docvalues will be simply dropped.
I dont think its enough to just note that the field has docvalues either right?
We need to also set the type
correctly in the merged field infos? This would imply that instead of
FieldOption.DOCVALUES, we need to have a
FieldOption for each ValueType so that we correctly update the type.
But looking at FI.update/setDocValues, it doesn't look like we 'type-promote'
here anyway?
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