Add rollup optimized for HashAggregation #122
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What problem does this PR solve?
Issue Number: close #121
Type of Change
Description
Create an aggNode in the intermediate phase in the agg operator, and use the aggNode to create three Intermediate groupingSet operators to process group data of groups 1 to 3. The original partial groupingSet operator processes data in group 0.
The total data input is reduced to reduce the HashTable operation time, which is optimized in the rollup scenario.
Performance Impact
No Impact: This change does not affect the critical path (e.g., build system, doc, error handling).
Positive Impact: I have run benchmarks.
Click to view Benchmark Results
TPCDS99 1T results in velox.
q22
Before: 13.686s
After: 11.256s (+17.76%)
q67
Before: 152.416s
After: 136.983 (+10.13%)
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Release Note
Please describe the changes in this PR
Release Note:
Checklist (For Author)
Breaking Changes
No
Yes (Description: ...)
Click to view Breaking Changes