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https://issues.apache.org/jira/browse/PIG-2051?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Woody Anderson updated PIG-2051:
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Attachment: 2051.patch
this patch propagates type information more correctly (though not
recursive/fully) to the pushProjection call.
Mainly, this means putting type information into via subfields into map types.
It doesn't fully descend and provide type information for subfields of
subfields etc. But, provided fields have the correct type information rather
than DataType.BYTEARRAY
> new LogicalSchema column prune code does not preserve type information for
> map subfields
> ----------------------------------------------------------------------------------------
>
> Key: PIG-2051
> URL: https://issues.apache.org/jira/browse/PIG-2051
> Project: Pig
> Issue Type: Bug
> Components: impl
> Affects Versions: 0.10
> Reporter: Woody Anderson
> Assignee: Woody Anderson
> Fix For: 0.10
>
> Attachments: 2051.patch
>
>
> current impl of ColumnPruneVisitor.visit ignores field type info and passes
> type BYTEARRAY for all map fields.
> the corrected type is pretty easy to fill in, especially since map field info
> is only attempted 1 level deep.
> i came across this b/c i utilize the type information in the pushProjection
> call, and this was previously of the 'correct' type information, the change
> over to LogicalSchema caused a regression.
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