Implement a new hash join to speed up join operator
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@gengliqi is already working on this.
Since May 17, 2024.
type/enhancement
- Dominant language
- C++
- Stars
- 1k
- Forks
- 423
- Avg merge
- 1d 15h
- Merged PRs (30d)
- 24
Description
Enhancement
We should implement a new hash join to speed up join operator.
The key part of new hash join is
- row layout of build table
- chain hash table(semi-join reducer based on tagged pointers)
- using prefetch technology to hide cache miss latency
- join-level late materialization for other condition
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