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From "sathish (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-6068) Disallow snapshot names that are also invalid directory names
Date Mon, 17 Mar 2014 11:57:44 GMT

    [ https://issues.apache.org/jira/browse/HDFS-6068?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13937710#comment-13937710
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sathish commented on HDFS-6068:
-------------------------------

Thanks Nicholas and andrew for having a look on the patch.
Actually  DFSUtil.isValidNameForComponent(..). this method is there in trunk version,and i
worked on branch version,so i took this DFSUtil.isValid() method.
I agree with your comments and updated the patch,please review the patch

> Disallow snapshot names that are also invalid directory names
> -------------------------------------------------------------
>
>                 Key: HDFS-6068
>                 URL: https://issues.apache.org/jira/browse/HDFS-6068
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: snapshots
>    Affects Versions: 2.4.0
>            Reporter: Andrew Wang
>            Assignee: sathish
>         Attachments: HDFS-6068-0001.patch, HDFS-6068-0002.patch, HDFS-6068-0003.patch
>
>
> There are a number of restrictions on valid names in HDFS. For example, you can't name
a directory "." or "..", or something containing a ":".
> However, I can happily create a snapshot named "a:b:c", resulting in this:
> {code}
> -> % hdfs dfs -createSnapshot /home/andrew a:b:c
> Created snapshot /home/andrew/.snapshot/a:b:c
> -> % hadoop fs -ls /home/andrew/.snapshot
> -ls: java.net.URISyntaxException: Relative path in absolute URI: a:b:c
> Usage: hadoop fs [generic options] -ls [-d] [-h] [-R] [<path> ...]
> {code}



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