[jira] [Created] (SOLR-9981) Multiple analytics fixes/performance improvements

["Houston Putman (JIRA)" <ji...@apache.org>]

Houston Putman created SOLR-9981:
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             Summary: Multiple analytics fixes/performance improvements
                 Key: SOLR-9981
                 URL: https://issues.apache.org/jira/browse/SOLR-9981
             Project: Solr
          Issue Type: Improvement
      Security Level: Public (Default Security Level. Issues are Public)
    Affects Versions: 6.3
            Reporter: Houston Putman
            Priority: Minor


Included are the following improvements/fixes:

* Improving the unit test case.
* Performance fix that stops the reading of ALL lucene segments over and again for each stats collector.
** The AtomicReaderContext that refers to the "current " segment is reused.
** This fix shows an improvement of about 25% in query time for a dataset of ~10M (=9.8M) records.
** Given the nature of the fix, the improvement should get better as the dataset increases.
* Fix for the NPE during comparison



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