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https://issues.apache.org/jira/browse/HIVE-11462?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14659429#comment-14659429
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Gopal V commented on HIVE-11462:
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bq. my earlier point (1) was that we don't use constantValues to instantiate
the constant struct object inspector via
ObjectInspectorFactory.getStandardConstantStructObjectInspector(); we use ret
instead.
ret is a transient so the result-set is never serialized, but good call.
I can rewrite that loop much more cleanly to call evaluate() only if the result
is constant.
> GenericUDFStruct should constant fold at compile time
> -----------------------------------------------------
>
> Key: HIVE-11462
> URL: https://issues.apache.org/jira/browse/HIVE-11462
> Project: Hive
> Issue Type: Bug
> Components: UDF
> Affects Versions: 2.0.0
> Reporter: Gopal V
> Attachments: HIVE-11462.1.patch, HIVE-11462.WIP.patch
>
>
> HIVE-11428 introduces a constant Struct Object, which is available for the
> runtime operators to assume as a constant parameter.
> This operator isn't constant folded during compilation since the UDF returns
> a complex type, which is logged as warning by the constant propogation layer.
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