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https://issues.apache.org/jira/browse/KUDU-646?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Grant Henke updated KUDU-646:
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    Target Version/s:   (was: 1.5.0)

> Check the scan type before applying the selection vector
> --------------------------------------------------------
>
>                 Key: KUDU-646
>                 URL: https://issues.apache.org/jira/browse/KUDU-646
>             Project: Kudu
>          Issue Type: Improvement
>          Components: perf, tablet
>    Affects Versions: M5
>            Reporter: Andrew Wang
>            Priority: Trivial
>
> As pointed out during code review of the MergeIterator, after merging the 
> selection vector is all true (all rows selected).
> This means during a scan, if we are using the MergeIterator, we can skip 
> checking the resulting SelectionVector. This will save us some CPU.



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