DocValues merging is not associative, leading to different results depending
upon how merges execute
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Key: LUCENE-3647
URL: https://issues.apache.org/jira/browse/LUCENE-3647
Project: Lucene - Java
Issue Type: Bug
Affects Versions: 4.0
Reporter: Robert Muir
recently I cranked up TestDuelingCodecs to actually test docvalues (previously
it wasn't testing it at all).
This test is simple, it indexes the same random content with 2 different
indexwriters, it just allows them
to use different codecs with different indexwriterconfigs.
then it asserts the indexes are equal.
Sometimes, always on BYTES_FIXED_DEREF type, we end out with one reader that
has a zero-filled byte[] for a doc,
but that same document in the other reader has no docvalues at all.
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