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Posted to dev@lucene.apache.org by "Jim Ferenczi (JIRA)" <ji...@apache.org> on 2017/11/22 21:54:00 UTC

[jira] [Created] (LUCENE-8062) Never cache GlobalOrdinalQuery

Jim Ferenczi created LUCENE-8062:
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             Summary: Never cache GlobalOrdinalQuery
                 Key: LUCENE-8062
                 URL: https://issues.apache.org/jira/browse/LUCENE-8062
             Project: Lucene - Core
          Issue Type: Improvement
            Reporter: Jim Ferenczi
            Priority: Minor


GlobalOrdinalsQuery holds a possibly large bitset of global ordinals that can pollute the query cache because the size of the query is not accounted in the memory usage of the cache.
Moreover two instances of this query must share the same top reader context to be considered equal so they are not the ideal candidate for segment level caching.



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