LuceneTaxonomyReader .decRef() may close the inner IR, renderring the LTR in a
limbo.
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Key: LUCENE-3485
URL: https://issues.apache.org/jira/browse/LUCENE-3485
Project: Lucene - Java
Issue Type: Bug
Components: modules/facet
Affects Versions: 3.4
Reporter: Gilad Barkai
Priority: Minor
TaxonomyReader which supports ref-counting, has a decRef() method which
delegates to an inner IndexReader and calls its .decRef(). The latter may close
the reader (if the ref is zeroes) but the taxonomy would remain 'open' which
will fail many of its method calls.
Also, the LTR's .close() method does not work in the same manner as
IndexReader's - which calls decRef(), and leaves the real closing logic to the
decRef(). I believe this should be the right approach for the fix.
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