[jira] [Updated] (TRAFODION-2578) Internal error 2235 with UDFs and subquery unnesting

["Hans Zeller (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/TRAFODION-2578?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Hans Zeller updated TRAFODION-2578:
-----------------------------------
    Fix Version/s:     (was: 2.2-incubating)

> Internal error 2235 with UDFs and subquery unnesting
> ----------------------------------------------------
>
>                 Key: TRAFODION-2578
>                 URL: https://issues.apache.org/jira/browse/TRAFODION-2578
>             Project: Apache Trafodion
>          Issue Type: Bug
>          Components: sql-cmp
>    Affects Versions: 1.3-incubating
>            Reporter: Hans Zeller
>            Assignee: Hans Zeller
>
> I've seen this error when compiling query plans with TMUDFs:
> *** ERROR[2235] Compiler Internal Error: An unknown error, originated from file ../optimizer/RelRoutine.cpp at line 465.
> The issue is in method RelExpr::getMoreOutputsIfPossible(), which is used during semantic query optimization to get additional key columns from RelExprs. This calls TableMappingUDF::getPotentialOutputValuesAsVEGs(), which is stubbed out with an assert.
> We either need to make RelExpr::getMoreOutputsIfPossible() virtual and override it for TableMappingUDF, or implement TableMappingUDF::getPotentialOutputValuesAsVEGs(). Right now I'm leaning towards the former.



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