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Posted to dev@lucene.apache.org by "Jakob Zwiener (JIRA)" <ji...@apache.org> on 2014/01/30 13:06:09 UTC

[jira] [Created] (LUCENE-5423) OpenBitSet hashCode and equals incongruent

Jakob Zwiener created LUCENE-5423:
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             Summary: OpenBitSet hashCode and equals incongruent
                 Key: LUCENE-5423
                 URL: https://issues.apache.org/jira/browse/LUCENE-5423
             Project: Lucene - Core
          Issue Type: Bug
          Components: core/other
    Affects Versions: 4.6.1
            Reporter: Jakob Zwiener


In org.apache.lucene.util.OpenBitSet the hashCode method might return different hash codes for equal bitsets. 
This happens when there are bits set in words right of wlen. This might happen through a getAndSet call (the documentation states that getAndSet may only be called on positions that are smaller than the size - which is the length of the array not wlen - this might be another issue).



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