[jira] [Work started] (IMPALA-11692) Struct slot memory sharing involving select * not working properly

["Daniel Becker (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/IMPALA-11692?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Work on IMPALA-11692 started by Daniel Becker.
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> Struct slot memory sharing involving select * not working properly 
> -------------------------------------------------------------------
>
>                 Key: IMPALA-11692
>                 URL: https://issues.apache.org/jira/browse/IMPALA-11692
>             Project: IMPALA
>          Issue Type: Bug
>            Reporter: Daniel Becker
>            Assignee: Daniel Becker
>            Priority: Major
>             Fix For: Impala 4.2.0
>
>
> With EXPAND_COMPLEX_TYPES=1, if there are structs coming from the star expansion and members of the structs are also given explicitly, slot memory sharing does not work in some cases:
> {code:java}
> explain select * from functional_orc_def.complextypes_nested_structs;
> row-size=64B{code}
> {code:java}
> explain select *, outer_struct.inner_struct1 from functional_orc_def.complextypes_nested_structs;
> row-size=80B{code}
> The row size should be the same in both cases as outer_struct.inner_struct1 is part of outer_struct which is included in the star.



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