Ozone edit  

An object store built on top of the new Hadoop HDDS block storage layer that can co-exist with HDFS. Implemented as an Ozone Manager (OM) service that manages the object store namespace, utilising the HDDS Storage Container Manager for block management. Objects are arranged into buckets, which themselves are arranged into volumes. Supports consistent writes, an RPC API, an Amazon S3 compatible REST API, a CLI, a load generation tool (Freon, previously Corona), and an Hadoop Compatible File System (OzoneFS), with a stated plan for mountable LUN storage (Quadra). Originally announced in October 2014, re-invigorated under the Hortonwworks Open Hybrid Architecture Initiative in September 2018, and currently under active development with a suggested release as part of HDP 3.2.

Technology Information

Type	Sub-Project
Parent Project	Apache Hadoop
Last Updated	May 2019 - v0.4-alpha

Related Technologies

Uses

HDDS

Release History

version	release date	release links	release comment
0.2-alpha	2018-10-01	announcement
0.3-alpha	2018-11-26	announcement; S3 endpoint
0.4-alpha	2019-05-07	announcement	Kerberos and transparent data encryption

Links

• http://ozone.hadoop.apache.org/ - home page
• https://hortonworks.com/blog/ozone-object-store-hdfs/ - initial blog post
• https://www.slideshare.net/Hadoop_Summit/ozone-and-hdfsozone-and-hdfss-evolution - Ozone, HDDS and Quadra presentation
• https://github.com/apache/hadoop/tree/trunk/hadoop-ozone/docs/content - documentation source
• https://issues.apache.org/jira/browse/HDFS-13074 - original JIRA case

Blog Posts

• Thoughts on Hortonwork's Open Hybrid Architecture Initiative 2018-09-21 Ozone Hadoop Peter