[teiid-issues] [JBoss JIRA] (TEIID-5700) Dependent join back-off max ndv set to independent ndv estimate

Steven Hawkins (Jira) issues at jboss.org
Sat Mar 23 08:19:00 EDT 2019


Steven Hawkins created TEIID-5700:
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             Summary: Dependent join back-off max ndv set to independent ndv estimate
                 Key: TEIID-5700
                 URL: https://issues.jboss.org/browse/TEIID-5700
             Project: Teiid
          Issue Type: Bug
          Components: Query Engine
            Reporter: Steven Hawkins
            Assignee: Steven Hawkins


The search being used to find a max ndv for the independent side is just setting the result to be the original ndv estimate for the independent side.  This results in unnecessary back-offs of performing the dependent join.



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