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https://issues.apache.org/jira/browse/PIG-363?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12620680#action_12620680
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Olga Natkovich commented on PIG-363:
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Alan says this is likely that generate code does not query the schema of UDF.
He suggested we look at code in
src/org/apache/pig/impl/logicalLayer/validators/TypeCheckingVisitor.java
> Describe does not produce correct schema for generate with UDF
> --------------------------------------------------------------
>
> Key: PIG-363
> URL: https://issues.apache.org/jira/browse/PIG-363
> Project: Pig
> Issue Type: Bug
> Affects Versions: types_branch
> Reporter: Olga Natkovich
> Priority: Critical
> Fix For: types_branch
>
>
> B = foreach A generate string.CONCATSEP(' ', $0, 'foo');
> describe B;
> {chararray}
> UDF has the following outputSchema function:
> public Schema outputSchema(Schema input) {
> String name = "concatsep_";
> if (input.getAliases().size() > 0)
> name += input.getAliases().iterator().next() + "_";
> return new Schema(new Schema.FieldSchema(name +
> getNextSchemaId(), DataType.CHARARRAY));
> }
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