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Posted to issues@lucene.apache.org by "Mayya Sharipova (Jira)" <ji...@apache.org> on 2020/09/23 13:45:00 UTC

[jira] [Created] (LUCENE-9541) BitSetConjunctionDISI can advance backwards from its components

Mayya Sharipova created LUCENE-9541:
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             Summary: BitSetConjunctionDISI can advance backwards from its components
                 Key: LUCENE-9541
                 URL: https://issues.apache.org/jira/browse/LUCENE-9541
             Project: Lucene - Core
          Issue Type: Bug
            Reporter: Mayya Sharipova


Not completely sure if this is a bug.

BitSetConjuctionDISI advances based on its lead  – DocIdSetIterator iterator, and doesn't consider that its another component – BitSetIterator may have already advanced passed a certain doc. This may result in duplicate documents.

This behaviour was exposed in this PR. 

 



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