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https://issues.apache.org/jira/browse/HIVE-635?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12731749#action_12731749
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Prasad Chakka commented on HIVE-635:
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zheng, can you add this context as a comment to initializeOp() code? otherwise
it will be difficult to understand what is going on.
> UnionOperator fails when different inputs have different ObjectInspector (but
> the same TypeInfo)
> ------------------------------------------------------------------------------------------------
>
> Key: HIVE-635
> URL: https://issues.apache.org/jira/browse/HIVE-635
> Project: Hadoop Hive
> Issue Type: Bug
> Affects Versions: 0.3.0, 0.3.1
> Reporter: Zheng Shao
> Assignee: Zheng Shao
> Attachments: HIVE-635.1.patch, HIVE-635.3.patch
>
>
> The current UnionOperator code assumes the ObjectInspectors from all parents
> are the same.
> But in reality, they can be different, and UnionOperator needs to do
> conversion if necessary.
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