apache / apache/datafusion-python

Integrate `datafusion-distributed` with `datafusion-python`

Abierto
#1,612 16 comentarios 1 reacción 0 asignados Ver en GitHub
enhancement
Lenguaje dominante
Python
Estrellas
604
Forks
174
Merge medio
1 d 7 h
PR fusionados (30 d)
4

Descripción

**Is your feature request related to a problem or challenge? Please describe what you are trying to do.**

Allow running distributed queries in `datafusion-python`

**Describe the solution you'd like**

Ideally something well integrated with `datafusion-python` that does not require big changes or using different APIs for executing distributed queries.

`datafusion-python` is already a very ergonomic wrapper for using `datafusion`, so something maintaining that philosophy without introducing a lot of API surface would be ideal.

I'm interested specifically in using the `datafusion-distributed` library from within Python, and I see three mutually exclusive ways of integrating it:
- Make `datafusion-python` depend on `datafusion-distributed`, hiding some internal plumbing in `datafusion-python` and extending the current API with distributed capabilities.
- Create an external crate that depends on both `datafusion-distributed` and `datafusion-python` that ships an external API for using distributed functionality in `datafusion-python`
- Make `datafusion-distributed` depend on `datafusion-python`, providing a set of functions and classes that decorate `datafusion-python` with distributed capabilities

I'm not sure which approach aligns best with this project's philosophy, the naive intuition from someone unfamiliar with this project is that the first option has greater chances of providing a well integrated experience, and it's probably the easiest to implement due to the fact that internal plumbing in the Rust world can be hidden in this project.

I actually tried this here:
- https://github.com/apache/datafusion-python/pull/1611

And the fact that with only ~1K LOC, examples and tests included, can yield a functional integration, makes me think that it might actually not be a bad idea. But again, I don't know what I don't know, so would very gladly accept feedback and suggestions on something different.

Guía de contribución

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Línea de trabajo

Comienza revisando la integración intentada en el pull request #1611 y las APIs existentes de datafusion-python y datafusion-distributed. Compara las tres disposiciones propuestas de dependencias y APIs, y después revisa los ejemplos y las pruebas incluidos en ese intento. Se considera terminado cuando exista una dirección de integración acordada que permita realizar consultas distribuidas desde Python sin cambios innecesarios en la API.

Escrito por el modelo de indexación a partir del texto del issue.

Evaluación

Stack tecnológico
python, rust
Área
data-engineering, distributed-systems
Tipo de issue
Nueva funcionalidad
Dificultad
5/5
Tiempo estimado
Más de una semana
Estado de actividad
Tranquilo
Claridad
Bastante claro
Aptitud para principiantes
35/100

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