[HDFS-6068] Disallow snapshot names that are also invalid directory names

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.4.0
• Fix Version/s: 2.4.0
• Component/s: snapshots
• Hadoop Flags: Reviewed
• Assignee: sathish
• Reporter: Andrew Wang
• Created: 06/Mar/14 21:51
• Updated: 10/Apr/14 13:11
• Resolved: 18/Mar/14 18:38

Description

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:

-> % 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> ...]