[teiid-issues] [JBoss JIRA] (TEIID-4320) Costing calculation issues

[Steven Hawkins (JIRA)]

Steven Hawkins created TEIID-4320:
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             Summary: Costing calculation issues
                 Key: TEIID-4320
                 URL: https://issues.jboss.org/browse/TEIID-4320
             Project: Teiid
          Issue Type: Bug
          Components: Query Engine
    Affects Versions: 7.7
            Reporter: Steven Hawkins
            Assignee: Steven Hawkins
            Priority: Critical
             Fix For: 9.1, 8.13.6, 9.0.1


When determining if a dependent join should be used we'll rule out too many scenarios based upon requiring additional ndv info - when that can be determined from cardinality alone.   Also we are inappropriately assuming key usage in predicate costing - as it does not consider the node which may not represent a single table.



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