[jira] Updated: (PIG-1176) Column Pruner issues in union of loader with and without schema

["Daniel Dai (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/PIG-1176?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Daniel Dai updated PIG-1176:
----------------------------

    Attachment: PIG-1176-1.patch

> Column Pruner issues in union of loader with and without schema
> ---------------------------------------------------------------
>
>                 Key: PIG-1176
>                 URL: https://issues.apache.org/jira/browse/PIG-1176
>             Project: Pig
>          Issue Type: Bug
>          Components: impl
>    Affects Versions: 0.6.0
>            Reporter: Daniel Dai
>            Assignee: Daniel Dai
>             Fix For: 0.7.0
>
>         Attachments: PIG-1176-1.patch
>
>
> Column pruner for union could fail if one source of union have the schema and the other does not have schema. For example, the following script fail:
> {code}
> a = load '1.txt' as (a0, a1, a2);
> b = foreach a generate a0;
> c = load '2.txt';
> d = foreach c generate $0;
> e = union b, d;
> dump e;
> {code}
> However, this issue is in trunk only and is not applicable to 0.6 branch.

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