[teiid-issues] [JBoss JIRA] (TEIID-5029) Regression with outer join optimization

[Steven Hawkins (JIRA)]

     [ https://issues.jboss.org/browse/TEIID-5029?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Steven Hawkins resolved TEIID-5029.
-----------------------------------
    Resolution: Done


Updated the logic to account for when both children are access nodes - which will only occur in limited circumstances when pushdown is initially inhibited (such as with a nested cross join).

There is a follow on enhancement to allow for additional pushdown planning after this particular scenario, but that's a very low priority.

> Regression with outer join optimization
> ---------------------------------------
>
>                 Key: TEIID-5029
>                 URL: https://issues.jboss.org/browse/TEIID-5029
>             Project: Teiid
>          Issue Type: Bug
>          Components: Query Engine
>    Affects Versions: 9.3
>            Reporter: Steven Hawkins
>            Assignee: Steven Hawkins
>             Fix For: 10.0, 9.3.3
>
>
> TEIID-4886 does not account for all tree structures and is producing a null pointer exception:
> java.lang.NullPointerException
>         at org.teiid.query.optimizer.relational.plantree.PlanNode.replaceChild(PlanNode.java:313)         at org.teiid.query.optimizer.relational.rules.RulePlanJoins.groupAcrossLeftOuter(RulePlanJoins.jav        at org.teiid.query.optimizer.relational.rules.RulePlanJoins.execute(RulePlanJoins.java:157) 



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