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<h2>What is Apache Hadoop Ozone?</h2>
<p class="lead">
Ozone is a new subproject of Apache Hadoop. It provides an
object store semantic for Hadoop.</p>
<p class="lead">It uses Hadoop Distributed Data Storage (HDDS) for storage layer. HDDS is
another new subporoject of Apache Hadoop.
</p>
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<p></p>
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<h4><span class="glyphicon glyphicon-sort-by-attributes" aria-hidden="true"></span> Scalable</h4>
<p>
Ozone is designed to scale to tens of billions of files and
blocks and, in the future, even more.
</p>
<p>
Small files or huge number of datanodes are no longer a limitation.
</p>
<p></p>
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<h4><span class="glyphicon glyphicon-inbox" aria-hidden="true"></span>
Consistent</h4>
<p>
Storage Layer uses RAFT protocol for consistentency.
</p>
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<h4><span class="glyphicon glyphicon-cloud" aria-hidden="true"></span>Cloud-native</h4>
<p>Hadoop Ozone is designed to work well in containerized environments like YARN and Kubernetes.
</p>
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<h2>Question and Answers</h2>
<h3>Where can I download it?</h3>
<p>Apache Hadoop Ozone is not yet released. It's being actively developed on
the trunk branch of Apache Hadoop. It will be released independently from
the main Hadoop release.</p>
<h3>How can I contribute</h3>
<p>The contribution process is the same as is for any other
<a href="https://wiki.apache.org/hadoop/HowToContribute">
Hadoop subproject.</a></p>
<h3>Does it mean a new Hadoop server component?</h3>
<p>Both Ozone and HDDS requires one additional master component -
Ozone Manager and Storage Container Manger, respectively. The
worker parts of Ozone/HDDS can be started as a HDFS
Datanode plugin.
</p>
<h3>How can I try it out?</h3>
<p>There is a
<a href="https://www.katacoda.com/elek/scenarios/ozone101">katacoda</a>
which can be used to try out Ozone. Please note that this is for
demostration and is not released by Apache.</p>
<p>For the Apache version, you can download and build the latest version
from <a href="https://github.com/apache/hadoop">trunk</a></p>
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