Space in the value for dfs.data.dir can cause great problems ------------------------------------------------------------
Key: HADOOP-2366 URL: https://issues.apache.org/jira/browse/HADOOP-2366 Project: Hadoop Issue Type: Bug Components: conf Affects Versions: 0.13.1 Reporter: Ted Dunning The following configuration causes problems: <property> <name>dfs.data.dir</name> <value>/mnt/hstore2/hdfs, /home/foo/dfs</value> <description> Determines where on the local filesystem an DFS data node should store its bl ocks. If this is a comma-delimited list of directories, then data will be stor ed in all named directories, typically on different devices. Directories that do not exist are ignored. </description> </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. My proposed solution would be to trimLeft all path names from this and similar property after splitting on comma. This still allows spaces in file and directory names but avoids this problem. -- This message is automatically generated by JIRA. - You can reply to this email to add a comment to the issue online.