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https://issues.apache.org/jira/browse/PIG-5067?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15677928#comment-15677928
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Daniel Dai commented on PIG-5067:
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bytearray is a wrong name, it means unknown type in Pig. Union chararray and
numeric result an unknown type is reasonable. Order by mixed type makes
nonsense. join/"group by" should deal with unknown type, any particular issue
did you see?
> Revisit union on numeric type and chararray to bytearray
> --------------------------------------------------------
>
> Key: PIG-5067
> URL: https://issues.apache.org/jira/browse/PIG-5067
> Project: Pig
> Issue Type: Bug
> Reporter: Koji Noguchi
>
> In PIG-2071, we changed the behavior of union on numeric and chararray to
> bytearray.
> This itself was always failing at runtime until we changed to skip the
> bytearray typecast for union-onschema in PIG-3270.
> (For union, it still fails with typecast to bytearray error. )
> Now, seeing users getting inconsistent results due to this union-ed bytearray.
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