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Posted to dev@lucene.apache.org by "Yonik Seeley (JIRA)" <ji...@apache.org> on 2015/03/24 14:03:55 UTC

[jira] [Created] (SOLR-7295) Remove uses of Query.clone()

Yonik Seeley created SOLR-7295:
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             Summary: Remove uses of Query.clone()
                 Key: SOLR-7295
                 URL: https://issues.apache.org/jira/browse/SOLR-7295
             Project: Solr
          Issue Type: Bug
            Reporter: Yonik Seeley


LUCENE-6369 changed Query.clone to clone deeply.
This is going to represent a performance regression to some who have very large / complex queries.

- try to remove any uses of clone() (we assumed shallow clone, and that's no longer the case)
- attempt to minimize the use of queries that do rewrite (we can only do this in our own query implementations).   A query that rewrites to a different query will now cause everything to be deep cloned if it's used in a boolean query anywhere.



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