Last took part in 2025

Apache DataFusion

Foundational library for DBs and compute engines

Contributors in 2026

–

Not taking part

Projects since 2016

2 a cycle on average

Cycles

1 of 11

First in 2025

Rank in 2026

–

By contributors

Mentors

for 2 projects in 2025

Contributors per cycle

Accepted projects each year, against the median organization that year

View as table

Each one has its own page of organizations and trends

Is Apache DataFusion in GSoC 2026?: No. It last took part in 2025.
How long has it taken part?: 1 of 11 cycles since 2016, first in 2025.
How many contributors does it usually take?: 2 a cycle on average, 2 in total. Its largest cycle was 2025, with 2.
What does it build with?: Python, Rust, SQL, Arrow.

Supporting Correlated Subqueries in Apache DataFusion
renjjMentored by Jay Zhan, Andrew Lamb
This project aims to implement comprehensive support for correlated subqueries in Apache DataFusion by applying Hyper's 'Unnesting Arbitrary Queries'...
Project
Improving Spilling Execution in DataFusion
SeoYoung LeeMentored by Yongting You
Apache DataFusion is an in-memory query execution engine optimized for OLAP workloads using Apache Arrow's columnar format. However, to support...
Project