[teiid-issues] [JBoss JIRA] (TEIID-3119) Improve full sort performance for dup removal and grouping

[Steven Hawkins (JIRA)]

Steven Hawkins created TEIID-3119:
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             Summary: Improve full sort performance for dup removal and grouping
                 Key: TEIID-3119
                 URL: https://issues.jboss.org/browse/TEIID-3119
             Project: Teiid
          Issue Type: Enhancement
          Components: Query Engine
            Reporter: Steven Hawkins
            Assignee: Steven Hawkins
             Fix For: 8.9


We perform a full sort for grouping/distinct reusing the existing sorting logic.  This is not as efficient as it could for larger data sets with smaller numbers of groups.  A hash implementation or combining the grouping with the sorting would perform better.



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