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An abstraction layer for distributed computation

Project description

Fugue

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Fugue is a pure abstraction layer that adapts to different computing frameworks such as Spark and Dask. It is to unify the core concepts of distributed computing and to help you decouple your logic from specific computing frameworks.

Installation

pip install fugue

Fugue has these extras:

For example a common use case is:

pip install fugue[sql,spark]

Docs and Tutorials

To read the complete static docs, click here

The best way to start is to go through the tutorials. We have the tutorials in an interactive notebook environent.

Run the tutorial using binder:

Binder

But it runs slow on binder, the machine on binder isn't powerful enough for a distributed framework such as Spark. Parallel executions can become sequential, so some of the performance comparison examples will not give you the correct numbers.

Run the tutorial using docker

Alternatively, you should get decent performance if running its docker image on your own machine:

docker run -p 8888:8888 fugueproject/tutorials:latest

Contributing Code

There are three steps to setting-up a development environment

  1. Create a virtual environment with your choice of environment manager
  2. Install the requirements
  3. Install the git hook scripts

Creating an environment

Below are examples for how to create and activate an environment in virtualenv and conda.

Using virtualenv

python3 -m venv venv
. venv/bin/activate

Using conda

conda create --name fugue-dev
conda activate fugue-dev

Installing requirements

The Fugue repo has a Makefile that can be used to install the requirements. It supports installation in both pip and conda.

Pip install requirements

make setupinpip

Conda install requirements

make setupinconda

Manually install requirements

For Windows users who don't have the make command, you can use your package manager of choice. For pip:

pip3 install -r requirements.txt

For Anaconda users, first install pip in the newly created environment. If pip install is used without installing pip, conda will use the system-wide pip

conda install pip
pip install -r requirements.txt

Notes for Windows Users

For Windows users, you will need to download Microsoft C++ Build Tools found here

Installing git hook scripts

Fugue has pre-commit hooks to check if code is appropriate to be commited. The previous make command installs this. If you installed the requirements manually, install the git hook scripts with:

pre-commit install

Update History

0.4.1

  • Added set operations to programming interface: union, subtract, intersect
  • Added distinct to programming interface
  • Ensured partitioning follows SQL convention: groups with null keys are NOT removed
  • Switched join, union, subtract, intersect, distinct to QPD implementations, so they follow SQL convention
  • Set operations in Fugue SQL can directly operate on Fugue statemens (e.g. TRANSFORM USING t1 UNION TRANSFORM USING t2)
  • Fixed bugs
  • Added onboarding document for contributors

<=0.4.0

  • Main features of Fugue core and Fugue SQL
  • Support backends: Pandas, Spark and Dask

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