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# Apache Hadoop Ozone

Ozone is a scalable, distributed object store for Hadoop.  Applications like
Apache Spark, Hive and YARN, can run against Ozone without any
modifications. Ozone comes with a [Java client library]({{< ref "JavaApi.md"
>}}), a [S3]({{< ref "S3.md" >}}) and a  [command line interface] 
({{< ref "CommandShell.md#shell" >}})  which makes it easy to use Ozone.

Ozone consists of volumes, buckets, and Keys:

* Volumes are similar to user accounts. Only administrators can create or delete volumes.
* Buckets are similar to directories. A bucket can contain any number of keys,  but buckets cannot contain other buckets.
* Keys are similar to files. A bucket can contain any number of keys.



<a href="{{< ref "RunningViaDocker.md" >}}"><button class="btn btn-danger btn-lg">Getting started</button></a>