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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 Fri, 07 Mar 2014 07:52:43 GMT

    [ https://issues.apache.org/jira/browse/HDFS-6068?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13923662#comment-13923662
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sathish commented on HDFS-6068:
-------------------------------

we can handle this invalid snapshot names at the time of creating the snapshot itself
As we are already having check for other operations like create, to validate the names.
we can use same check befor creating the snapshot whether the snapshot name is valid or not


> 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
>
> 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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