This directory contains a sample cluster definition and script for testing upgrade from previous version to the current one.
Data for each container is persisted in mounted volume (by default it's data under the compose/upgrade directory, but can be overridden via OZONE_VOLUME environment variable).
Prior version is run using an official apache/ozone image, while the current version is run with the ozone-runner image using locally built source code.
Currently the test script only supports a single version upgrade (eg. from 0.5.0 to 1.0.0).