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

HDSL allows different kind of storage systems to be built on an HDFS cluster. Ozone is a distributed key-value store built using HDSL.

Ozone is an object store for Hadoop. It is a redundant, distributed objectobject store build built by leveraging primitives present in HDFSHDSL. Ozone supports RESTREST API for accessing the store.

Ozone is a work in progress and currently in alpha state. To test it you needto build if from the source code or use Hadoop version higher than 3.1.

Getting started

To run an Ozone cluster you have multiple option:

1. Use prebaked docker images from the dockerhub (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.

Additional information

• To follow the progress of Ozone development you can check the JIRA dashboard

• All the discussions/substasks/original design documents are available from the feature branch jira:

  Jira
  server ASF JIRA serverId 5aa69414-a9e9-3523-82ec-879b028fb15b key HDFS-7240

• The documentation is part of the source code, but you can check directly from github: https://github.com/apache/hadoop/tree/HDFS-7240/hadoop-hdfs-project/hadoop-hdfs/src/site/markdown See the markdown files with Ozone prefix (Or you can generate a new site from the feature branch)