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

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

It is a redundant, distributed object store built by leveraging primitives present in HDSLHDDS. Ozone supports REST API for accessing the store.

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

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

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

• A detailed discussion and work on how HDSL can HDDS can be used in HDFS is tracked in Building HDFS on top of new storage layer
• A detailed discussion of Ozone file system and design docs can be found here. 
• A detailed and work items for the security of  Hadoop Distributed Storage Layer is tracked in this JIRA

• The documentation is part of the source code, but you can check out 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)