Introduction

we want to estimate time during a trip between 2 points in a city and our data are car's locations that are produced to kafka every 5 second's .

its huge data so to solve this problem we divide city to 10000 points and assign closet point to every record with its location and calculate weight between points with spark aggregation and produce result to kafka

example tehran which is divided to points

Install

sudo apt update -y
sudo apt install -y git python3 python3-pip python3-venv

git clone https://github.com/hoseinlook/road-traffic-graph.git

cp -n .env.example .env
nano .env

python3.8 -m venv venv
source venv/bin/activate
pip install -U pip
pip install -r requirements.txt

Run

to run this project at first provide infrastructure like kafka and zookeeper with docker

start kafka:

docker-compose up

• kafka bootstrap host: localhost:9093
• zookeeper server: localhost:2181

start pipeline:

now start pyspark pipeline

source venv/bin/activate
python -m pipeline

• spark webUI: localhost:4040

produce example data to kafka:

source venv/bin/activate
python -m generate_data

Note:

you can watch checkpoint's and data of kafka and data of zookeeper in storage directory

Optional

run spark in jupyter (its not streaming) to watch

jupyter-notebook .