Michael Ho created IMPALA-8006:
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Summary: 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
[~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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