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From "Eli Collins (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HADOOP-8299) ViewFs doesn't work with a slash mount point
Date Fri, 20 Apr 2012 21:27:33 GMT
Eli Collins created HADOOP-8299:

             Summary: ViewFs doesn't work with a slash mount point
                 Key: HADOOP-8299
                 URL: https://issues.apache.org/jira/browse/HADOOP-8299
             Project: Hadoop Common
          Issue Type: Bug
          Components: fs
    Affects Versions: 2.0.0
            Reporter: Eli Collins

We currently assume [a typical viewfs client configuration|https://issues.apache.org/jira/secure/attachment/12507504/viewfs_TypicalMountTable.png]
is a set of non-overlapping mounts. This means every time you want to add a new top-level
directory you need to update the client-side mountable config. If users could specify a slash
mount, and then add additional mounts as necessary they could add a new top-level directory
without updating all client configs (as long as the new top-level directory was being created
on the NN the slash mount points to). This could be achieved by HADOOP-8298 (merge mounts,
since we're effectively merging all new mount points with slash) or having the notion of a
"default NN" for a mount table.

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