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Posted to issues@hive.apache.org by "Jesus Camacho Rodriguez (JIRA)" <ji...@apache.org> on 2016/08/01 06:46:20 UTC

[jira] [Commented] (HIVE-14378) Data size may be estimated as 0 if no columns are being projected after an operator

    [ https://issues.apache.org/jira/browse/HIVE-14378?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15401609#comment-15401609 ] 

Jesus Camacho Rodriguez commented on HIVE-14378:
------------------------------------------------

+1

> 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.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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