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https://issues.apache.org/jira/browse/PIG-1095?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12782551#action_12782551
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Yan Zhou commented on PIG-1095:
-------------------------------

There is no generic concepts or implementations in terms of schema. All 
projection needs is just a different way to construct a  schema. After 
construction, the schema behaves exactly the same with no sepcial methods for 
projection.
The difference in construction is because that projection allows for duplicate 
column names, and null names. In other words, the restriction is a bit relaxed 
at construction.

> [zebra] Schema support of anonymous fields in COLECTION fails
> -------------------------------------------------------------
>
>                 Key: PIG-1095
>                 URL: https://issues.apache.org/jira/browse/PIG-1095
>             Project: Pig
>          Issue Type: Bug
>            Reporter: Yan Zhou
>            Assignee: Yan Zhou
>            Priority: Minor
>             Fix For: 0.6.0, 0.7.0
>
>         Attachments: PIG-1095.patch
>
>
> The schema parser fails on schemas of COLLECTION columns like 
> c:collection(int).

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