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https://issues.apache.org/jira/browse/HIVE-14378?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Ashutosh Chauhan updated HIVE-14378:
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    Attachment: HIVE-14378.4.patch

> Data size may be estimated as 0 if no columns are being projected after an 
> operator
> -----------------------------------------------------------------------------------
>
>                 Key: HIVE-14378
>                 URL: https://issues.apache.org/jira/browse/HIVE-14378
>             Project: Hive
>          Issue Type: Bug
>          Components: Physical Optimizer, Statistics
>            Reporter: Ashutosh Chauhan
>            Assignee: Ashutosh Chauhan
>         Attachments: HIVE-14378.2.patch, HIVE-14378.3.patch, 
> HIVE-14378.3.patch, HIVE-14378.4.patch, HIVE-14378.patch
>
>
> in those cases we still emit rows.. but they may not have any columns within 
> it.  We shouldn't estimate 0 data size in such cases.



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