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https://issues.apache.org/jira/browse/IMPALA-8006?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Tim Armstrong resolved IMPALA-8006.
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Resolution: Won't Do
Per Norbert's comment, this likely isn't high impact.
> Consider replacing the modulus in KrpcDatastreamSender with fast mod
> ---------------------------------------------------------------------
>
> Key: IMPALA-8006
> URL: https://issues.apache.org/jira/browse/IMPALA-8006
> Project: IMPALA
> Issue Type: Improvement
> Components: Distributed Exec
> Affects Versions: Impala 3.1.0
> Reporter: Michael Ho
> Priority: Major
> Labels: ramp-up
>
> [~tlipcon] pointed out that there is potential improvement which can be
> implemented for the modulus used in our sender for the partitioning
> exchanges:
> http://www.idryman.org/blog/2017/05/03/writing-a-damn-fast-hash-table-with-tiny-memory-footprints/
> (Optimizing Division for Hash Table Size).
> We should evaluate its effectiveness and implement it for
> KrpcDataStreamSender if appropriate.
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