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Hadoop Distributed Data Store (HDDS) is a distributed, replicated block layer that allows separation of block layer and namespace for HDFS.

HDDS allows different kind of storage systems to be built on an HDFS cluster. Ozone is a distributed key-value store built using HDDS. It is a redundant, distributed object store built by leveraging primitives present in HDDS. Ozone supports REST API for accessing the storeRPC and REST APIs as well as a Hadoop Compatible File System called OzoneFS.

Ozone is a work in progress and currently in alpha state. To testtry it out, you need to build if it from the source code or use Hadoop version higher than 3.1.

Getting started

To You have multiple options to run an Ozone cluster you have multiple options:

1. Use prebaked docker images from the docker hub (no build is required, but these images are not from the Apache Hadoop project)

2. Build a new Ozone cluster from the source code and start a cluster with docker (also useful for development)
3. Build new Ozone cluster from the source code and start it with the startup scripts without docker.

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