I'm trying to upgrade our application from Lucene 2.4.1 to Lucene 2.9.1.
I've been using an InstantiatedIndex to do a bunch of unit testing, but am
running into a some problems with Lucene 2.9.1.
In particular, when I try to run a MatchAllDocsQuery on my InstantiatedIndex
(which worked fine on 2.4.1) a NullPointerException is raised. I think I
tracked down the problem in the Lucene source.
In the 2.9.1 MatchAllDocsQuery, the MatchAllScorer retrieves termDocs from
the IndexReader passed to it with
reader.termDocs(null)
which I assume is supposed to return all termDocs. However, tracing this
call down
IndexReader.termDocs(term) calls InstantiatedTermDocs.seek(
term) calls InstantiatedIndex.findTerm(term)
which is implemented as
InstantiatedTerm findTerm(Term term) {
return findTerm(term.field(), term.text());
}
which, since term is null, results in a NullPointerException. This seems to
me like an bug either in the MatchAllDocsQuery implementation (the version
in 2.4.1 did not use termDocs, so did not pass through this null), or a bug
in the implementation of InstantiatedIndex.
Any suggestions on what I can do about this? I definitely can't get rid of
the MatchAllDocsQuery and don't really want to move back to a slow
RAMDirectory.
