This repository provides a Docker image definition for a hadoop installation hadoop-base-img (prebuilt available on Docker Hub: leahtgu/hadoop-base-img) and a docker compose file for a pseudo-distributed hadoop cluster consisting of three containers (primary namenode: hadoop, datanode, secondary namenode).
There are also some examples in the mounted-data/ folder which is automatically mounted to the primary container.
This setup is intended for educational purposes, particularly running python-defined MapReduce jobs via mrjob.