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https://issues.apache.org/jira/browse/HIVE-17651?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16251665#comment-16251665
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Zoltan Haindrich commented on HIVE-17651:
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[~jcamachorodriguez] I guess there is no issue here...but just in case; in the
next link ; the stats gathering is *always* off; and because of that the
boolean which would capture the vectorization state is never updated...
https://github.com/apache/hive/blame/master/ql/src/java/org/apache/hadoop/hive/ql/exec/TableScanOperator.java#L259-L273
do you think this might cause any trouble; or just close this ticket?
> 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
> Assignee: Zoltan Haindrich
> Attachments: HIVE-17651.01ex.patch, HIVE-17651.02rc.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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