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Posted to issues@hive.apache.org by "Zoltan Haindrich (JIRA)" <ji...@apache.org> on 2017/10/03 12:22:00 UTC

[jira] [Updated] (HIVE-17651) Profile TableScanOperator in case stats gathering is on

     [ https://issues.apache.org/jira/browse/HIVE-17651?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Zoltan Haindrich updated HIVE-17651:
------------------------------------
    Attachment: HIVE-17651.01ex.patch
                HIVE-17651.02rc.patch

#1ex) check what tests are setting vectorization currently
#2rc) remove the early return - its not critical whats after it..

> Profile TableScanOperator in case stats gathering is on
> -------------------------------------------------------
>
>                 Key: HIVE-17651
>                 URL: https://issues.apache.org/jira/browse/HIVE-17651
>             Project: Hive
>          Issue Type: Sub-task
>            Reporter: Zoltan Haindrich
>         Attachments: HIVE-17651.01ex.patch, HIVE-17651.02rc.patch
>
>
> It seems to me that there might be some overhead when the operator is gathering the stats; 
> also check: it seems that in case vectorization is on ; the collected rowcount would be invalid



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