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From "Lohit Vijayarenu (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-9631) ViewFs should use underlying FileSystem's server side defaults
Date Tue, 18 Jun 2013 05:41:20 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-9631?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13686409#comment-13686409
] 

Lohit Vijayarenu commented on HADOOP-9631:
------------------------------------------

Taking a look at how ViewFs mountable is constructed, it looks there is no straightforward
way to get TargetFileSystem given mount point or path. I started with changing getServerDefaults
to accept Path. Now, create call would pass a Path which does not exists. So, we will have
to resolve the Path to mountpoint. I see that ViewFileSystem::resolve can fetch the mountpoint,
but not an easy way to fetch underlying FileSystem. '/' seem to always resolve to InteralViewOfDir
which does not have targetFileSytem. Any suggestions of easy way to fetch this?
                
> ViewFs should use underlying FileSystem's server side defaults
> --------------------------------------------------------------
>
>                 Key: HADOOP-9631
>                 URL: https://issues.apache.org/jira/browse/HADOOP-9631
>             Project: Hadoop Common
>          Issue Type: Bug
>          Components: fs, viewfs
>    Affects Versions: 2.0.4-alpha
>            Reporter: Lohit Vijayarenu
>         Attachments: HADOOP-9631.trunk.1.patch, HADOOP-9631.trunk.2.patch, TestFileContext.java
>
>
> On a cluster with ViewFS as default FileSystem, creating files using FileContext will
always result with replication factor of 1, instead of underlying filesystem default (like
HDFS)

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