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https://issues.apache.org/jira/browse/PIG-1616?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Thejas M Nair updated PIG-1616:
-------------------------------
Attachment: PIG-1616.1.patch
PIG-1616.1.patch - calls LogicalPlanValidationExecutor.validate() to set the
actual types, before the merged schema for 'union onschema' is created.
Passes unit tests and test-patch. Ready for review.
> 'union onschema' does not use create output with correct schema when udfs are
> involved
> --------------------------------------------------------------------------------------
>
> Key: PIG-1616
> URL: https://issues.apache.org/jira/browse/PIG-1616
> Project: Pig
> Issue Type: Bug
> Affects Versions: 0.8.0
> Reporter: Thejas M Nair
> Assignee: Thejas M Nair
> Fix For: 0.8.0
>
> Attachments: PIG-1616.1.patch
>
>
> 'union onshcema' creates a merged schema based on the input schemas. It does
> that in the queryparser, and at that stage the udf return type used is the
> default return type. The actual return type for the udf is determined later
> in the TypeCheckingVisitor using EvalFunc.getArgsToFuncMapping().
> 'union onschema' should use the final type for its input relation to create
> the merged schema.
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