[HDFS-455] Make NN and DN handle in a intuitive way comma-separated configuration strings

• Type: Improvement
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 0.20.1, 0.21.0
• Fix Version/s: 0.22.0
• Component/s: datanode, namenode
• Hadoop Flags: Reviewed
• Assignee: Michele Catasta
• Reporter: Michele Catasta
• Created: 30/Jun/09 00:30
• Updated: 02/May/13 02:29
• Resolved: 16/Nov/10 20:42

Description

The following configuration causes problems:
<property>
<name>dfs.data.dir</name>
<value>/mnt/hstore2/hdfs, /home/foo/dfs</value>
</property>

The problem is that the space after the comma causes the second directory for storage to be " /home/foo/dfs" which is in a directory named <SPACE> which contains a sub-dir named "home" in the hadoop datanodes default directory. This will typically cause the user's home partition to fill, but will be very hard for the user to understand since a directory with a whitespace name is hard to understand.

(ripped from HADOOP-2366)

Issue Links

• depends upon: HADOOP-2366 Space in the value for dfs.data.dir can cause great problems