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https://issues.apache.org/jira/browse/PIG-2127?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13474529#comment-13474529
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Andrew Perepelytsya commented on PIG-2127:
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Hi, I've come across this regression in 0.10.0. However, after building PIG 
from the branch-0.10 (upcoming 0.10.1 as of Oct 11 2012), the issue is still 
there, nothing was fixed. This is a major problem, as it breaks the very basic 
promise of Pig being resilient to an evolving schema, please don't let it slip 
into 0.10.1 and fix it.
                
> PigStorageSchema need to deal with missing field
> ------------------------------------------------
>
>                 Key: PIG-2127
>                 URL: https://issues.apache.org/jira/browse/PIG-2127
>             Project: Pig
>          Issue Type: Bug
>          Components: impl
>    Affects Versions: 0.10.0
>            Reporter: Daniel Dai
>             Fix For: 0.10.0
>
>
> Currently, if data contains fewer columns than the schema, PigStorageSchema 
> will throw IndexOutOfBound exception (PigStorageSchema:97). We should padding 
> null in this case as we did in PigStorage.

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