Robert Muir created LUCENE-6064:
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Summary: throw exception during sort for misconfigured field
Key: LUCENE-6064
URL: https://issues.apache.org/jira/browse/LUCENE-6064
Project: Lucene - Core
Issue Type: Bug
Reporter: Robert Muir
If you sort on field X, and it has no docvalues, today it will silently treat
it as "all values missing". This can be very confusing since it just means
nothing will happen at all.
But there is a distinction between "no docs happen to have a value for this
field" and "field isn't configured correctly". The latter should get an
exception, telling the user to index docvalues, or wrap the reader with
UninvertingReader.
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