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https://issues.apache.org/jira/browse/IMPALA-6821?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Thomas Tauber-Marshall resolved IMPALA-6821.
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Resolution: Fixed
> Push down limits into Kudu
> --------------------------
>
> Key: IMPALA-6821
> URL: https://issues.apache.org/jira/browse/IMPALA-6821
> Project: IMPALA
> Issue Type: Improvement
> Components: Backend
> Reporter: Andrew Wong
> Assignee: Thomas Tauber-Marshall
> Priority: Major
> Labels: kudu, perf
>
> The progress made in KUDU-16 introduced a way to impose limits on Kudu
> scanners, potentially reducing the number of RPCs sent per scan, CPU used for
> scanner evaluation on the tablet server, etc. It would be nice if Impala
> could make use of this new behavior.
> I put up an admittedly clunky [patch|https://gerrit.cloudera.org/c/9923/]
> that implements limits on a per-token basis. I'm no Impala expert, so there
> may be an API missing in Kudu that would make Impala's life easier in
> implementing this. Maybe it's as easy as adjusting the limit after
> re-hydrating the token into a scanner.
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