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From "Zhe Zhang (JIRA)" <j...@apache.org>
Subject [jira] [Issue Comment Deleted] (HADOOP-13055) Implement linkMergeSlash for ViewFs
Date Fri, 19 Aug 2016 18:13:20 GMT

     [ https://issues.apache.org/jira/browse/HADOOP-13055?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Zhe Zhang updated HADOOP-13055:
-------------------------------
    Comment: was deleted

(was: Actually, after looking more at the code, what I really want is the ability to mount
the root of an HDFS to some path in the mount table (not necessarily the root of the mount
table). This is already possible. Unassigning myself from this JIRA.)

> Implement linkMergeSlash for ViewFs
> -----------------------------------
>
>                 Key: HADOOP-13055
>                 URL: https://issues.apache.org/jira/browse/HADOOP-13055
>             Project: Hadoop Common
>          Issue Type: New Feature
>          Components: fs, viewfs
>            Reporter: Zhe Zhang
>
> In a multi-cluster environment it is sometimes useful to operate on the root / slash
directory of an HDFS cluster. E.g., list all top level directories. Quoting the comment in
{{ViewFs}}:
> {code}
>  *   A special case of the merge mount is where mount table's root is merged
>  *   with the root (slash) of another file system:
>  *   <ul>
>  *   <li>    fs.viewfs.mounttable.default.linkMergeSlash=hdfs://nn99/
>  *   </ul>
>  *   In this cases the root of the mount table is merged with the root of
>  *            <b>hdfs://nn99/ </b> 
> {code}



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