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Posted to dev@pig.apache.org by "Daniel Dai (JIRA)" <ji...@apache.org> on 2011/02/04 00:28:29 UTC

[jira] Updated: (PIG-1536) use same logic for merging inner schemas in "default union" and "union onschema"

     [ https://issues.apache.org/jira/browse/PIG-1536?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Daniel Dai updated PIG-1536:
----------------------------

    Attachment: PIG-1536-1.patch

> use same logic for merging inner schemas in "default union" and "union onschema"
> --------------------------------------------------------------------------------
>
>                 Key: PIG-1536
>                 URL: https://issues.apache.org/jira/browse/PIG-1536
>             Project: Pig
>          Issue Type: Task
>            Reporter: Thejas M Nair
>            Assignee: Daniel Dai
>             Fix For: 0.9.0
>
>         Attachments: PIG-1536-1.patch
>
>
> We should consider using logic for merging inner schema in case of the two different types of union. 
> In case of 'default union', it merges the two inner schema of bags/tuples by position if the number of fields are same and the corresponding types are compatible. 
> In case of 'union onschema', it considers tuple/bag with different innerschema to be incompatible types.

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