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Posted to issues@lucene.apache.org by "Erick Erickson (Jira)" <ji...@apache.org> on 2019/10/28 15:09:00 UTC

[jira] [Created] (SOLR-13875) Check why LBSolrClient thinks it has to sort on _docid_

Erick Erickson created SOLR-13875:
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             Summary: Check why LBSolrClient thinks it has to sort on _docid_
                 Key: SOLR-13875
                 URL: https://issues.apache.org/jira/browse/SOLR-13875
             Project: Solr
          Issue Type: Improvement
      Security Level: Public (Default Security Level. Issues are Public)
            Reporter: Erick Erickson


Related to SOLR-13874. LBSolrClient issues a query that sorts on \_docid\_. This can take over 12 seconds on a 1B doc replica. Is the sorting necessary at all? If it's removed, what are the effects on performance? Of we change SOLR-13874, we can close this.

Frankly I suspect that no matter what, there have to be over 1B comparisons done and that's what's taking the time, but I wanted to call this out explicitly.



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