apache / apache/gluten

[VL] Optimize sort based shuffle

Open
#5,929 3 comments 0 reactions 0 assignees View on GitHub
enhancement
Dominant language
Scala
Stars
1.6k
Forks
657
Avg merge
2d 14h
Merged PRs (30d)
80

Description

### Description

I tested the sort based shuffle function and found through the perf tool that the largest CPU consumption is in the serialize part. Do you have any plans to write a custom serializer instead of using `PrestoVectorSerde` directly to optimize performance? Or are there any other optimization possibilities?
截屏2024-05-30 22 35 02

Contributor guide

Open the contributing guide

Research direction

Start with the sort-based shuffle implementation and the performance-tool result identifying serialization as the largest CPU cost. Compare the current direct use of PrestoVectorSerde with possible alternatives, and define completion by a measured reduction in serialization overhead with equivalent shuffle behavior.

Written by the indexing model from the issue text.

Assessment

Tech stack
scala
Domain
performance
Issue type
Feature
Difficulty
5/5
Estimated time
Over a week
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
25/100

Get new issues in your inbox

A short digest of beginner-friendly GitHub issues.