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Posted to dev@lucene.apache.org by "Adrien Grand (JIRA)" <ji...@apache.org> on 2016/07/31 19:04:20 UTC

[jira] [Created] (LUCENE-7401) BKDWriter should ensure all dimensions are indexed

Adrien Grand created LUCENE-7401:
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             Summary: BKDWriter should ensure all dimensions are indexed
                 Key: LUCENE-7401
                 URL: https://issues.apache.org/jira/browse/LUCENE-7401
             Project: Lucene - Core
          Issue Type: Bug
            Reporter: Adrien Grand
            Priority: Minor


The current heuristic is to use the dimension that has the largest span, so if dimensions have a different distribution of values, we could theoretically (but maybe in practice too?) end up with one dimension that is not indexed at all and queries that are mostly selective on this dimension would need to scan lots of blocks.



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