Andrew Wong created IMPALA-6821:
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Summary: Push down limits into Kudu
Key: IMPALA-6821
URL: https://issues.apache.org/jira/browse/IMPALA-6821
Project: IMPALA
Issue Type: Improvement
Components: Clients
Reporter: Andrew Wong
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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