[MAPREDUCE-1441] Configuration of directory lists should trim whitespace

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 0.21.0, 0.22.0
• Component/s: jobtracker, tasktracker
• Hadoop Flags: Reviewed
• Assignee: Todd Lipcon
• Reporter: Todd Lipcon
• Created: 02/Feb/10 18:54
• Updated: 13/Feb/10 18:33
• Resolved: 13/Feb/10 11:26

Description

HADOOP-2366 added a getTrimmedStringCollection method to Configuration. MapReduce should use this for all the cases where it configures a list of directories. This solves issues that come up when people set mapred.local.dir to "/data/1, /data/2, /data/3" (note the spaces). This is a very common mistake that we should guard against.

Issue Links

• is related to: HADOOP-2366 Space in the value for dfs.data.dir can cause great problems
• is related to: HADOOP-6534 LocalDirAllocator should use whitespace trimming configuration getters