Rajesh Balamohan created HIVE-24205:
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Summary: Optimise CuckooSetBytes
Key: HIVE-24205
URL: https://issues.apache.org/jira/browse/HIVE-24205
Project: Hive
Issue Type: Improvement
Reporter: Rajesh Balamohan
Attachments: Screenshot 2020-09-28 at 4.29.24 PM.png
{{FilterStringColumnInList, StringColumnInList}} etc use CuckooSetBytes for
lookup.
!Screenshot 2020-09-28 at 4.29.24 PM.png|width=714,height=508!
One option to optimize would be to add boundary conditions on "length" with the
min/max length stored in the hashes. This would significantly reduce the number
of hash computation that needs to happen. E.g
[TPCH-Q12|https://github.com/hortonworks/hive-testbench/blob/hdp3/sample-queries-tpch/tpch_query12.sql#L20]
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