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HDDS-1971. Update document for HDDS-1891: Ozone fs shell command should work with default port when port number is not specified (#1306)

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Siyao Meng 2019-08-18 18:29:52 -07:00 committed by Bharat Viswanadham
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hadoop-hdds/docs/content/interface/OzoneFS.md
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@ -77,13 +77,39 @@ Or put command etc. In other words, all programs like Hive, Spark, and Distcp wi
Please note that any keys created/deleted in the bucket using methods apart from OzoneFileSystem will show up as directories and files in the Ozone File System.
Note: Bucket and volume names are not allowed to have a period in them.
Moreover, the filesystem URI can take a fully qualified form with the OM host and port as a part of the path following the volume name.
For example,
Moreover, the filesystem URI can take a fully qualified form with the OM host and an optional port as a part of the path following the volume name.
For example, you can specify both host and port:
{{< highlight bash>}}
hdfs dfs -ls o3fs://bucket.volume.om-host.example.com:5678/key
{{< /highlight >}}
When the port number is not specified, it will be retrieved from config key `ozone.om.address`
if defined; or it will fall back to the default port `9862`.
For example, we have `ozone.om.address` configured as following in `ozone-site.xml`:
{{< highlight xml >}}
<property>
<name>ozone.om.address</name>
<value>0.0.0.0:6789</value>
</property>
{{< /highlight >}}
When we run command:
{{< highlight bash>}}
hdfs dfs -ls o3fs://bucket.volume.om-host.example.com/key
{{< /highlight >}}
The above command is essentially equivalent to:
{{< highlight bash>}}
hdfs dfs -ls o3fs://bucket.volume.om-host.example.com:6789/key
{{< /highlight >}}
Note: Only port number from the config is used in this case,
whereas the host name in the config `ozone.om.address` is ignored.
## Supporting older Hadoop version (Legacy jar, BasicOzoneFilesystem)