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https://issues.apache.org/jira/browse/HADOOP-13883?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15741523#comment-15741523
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Vinayakumar B commented on HADOOP-13883:
----------------------------------------
{code} `-fs <default filesystem URL to use>` | Specify default filesystem URL
to use. Overrides 'fs.defaultFS' property from configurations. |{code}
Actually, earlier message {{local|namenode:port}} was not wrong. But it didnt
mention explicitly about supporting other filesystems using full url. In-fact
'local' is shortcut for 'file:///' and 'namenode:port' is shortcut for
'hdfs://namenode:port'. see FileSystem#fixName() as below.
{code} /** Update old-format filesystem names, for back-compatibility. This
should
* eventually be replaced with a checkName() method that throws an exception
* for old-format names.
*/
private static String fixName(String name) {
// convert old-format name to new-format name
if (name.equals("local")) { // "local" is now "file:///".
LOGGER.warn("\"local\" is a deprecated filesystem name."
+" Use \"file:///\" instead.");
name = "file:///";
} else if (name.indexOf('/')==-1) { // unqualified is "hdfs://"
LOGGER.warn("\""+name+"\" is a deprecated filesystem name."
+" Use \"hdfs://"+name+"/\" instead.");
name = "hdfs://"+name;
}
return name;
}{code}
So, Now description can be updated to mention about acceptance of {{local}} and
{{namenode:port}} also instead of {{file:///}} and {{hdfs://namenode:port}}
hope I am clear now.
> Add description of -fs option in generic command usage
> ------------------------------------------------------
>
> Key: HADOOP-13883
> URL: https://issues.apache.org/jira/browse/HADOOP-13883
> Project: Hadoop Common
> Issue Type: Bug
> Components: documentation
> Reporter: Yiqun Lin
> Assignee: Yiqun Lin
> Priority: Minor
> Fix For: 2.8.0, 3.0.0-alpha2
>
> Attachments: HADOOP-13883.001.patch, HADOOP-13883.addendum001.patch,
> HADOOP-13883.addendum002.patch
>
>
> Currently the description of option '-fs' is missing in generic command
> usage in documentation {{CommandManual.md}}. And the users won't know to use
> this option, while this option already makes sense to {{hdfs dfsadmin}},
> {{hdfs fsck}}, etc.
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