[MAPREDUCE-2074] Task should fail when symlink creation fail

• Type: Bug
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 0.20.2
• Fix Version/s: 0.23.0
• Component/s: distributed-cache
• Hadoop Flags: Reviewed
• Assignee: Priyo Mustafi
• Reporter: Koji Noguchi
• Created: 16/Sep/10 21:44
• Updated: 15/Nov/11 00:49
• Resolved: 01/Mar/11 05:59

Description

If I pass an invalid symlink as -Dmapred.cache.files=/user/knoguchi/onerecord.txt#abc/abc

Task only reports a WARN and goes on.

 
2010-09-16 21:38:49,782 INFO org.apache.hadoop.mapred.TaskRunner: Creating symlink: /0/tmp/mapred-local/taskTracker/knoguchi/distcache/-5031501808205559510_-128488332_1354038698/abc-nn1.def.com/user/knoguchi/onerecord.txt <- /0/tmp/mapred-local/taskTracker/knoguchi/jobcache/job_201008310107_15105/attempt_201008310107_15105_m_000000_0/work/./abc/abc
2010-09-16 21:38:49,789 WARN org.apache.hadoop.mapred.TaskRunner: Failed to create symlink: /0/tmp/mapred-local/taskTracker/knoguchi/distcache/-5031501808205559510_-128488332_1354038698/abc-nn1.def.com/user/knoguchi/onerecord.txt <- /0/tmp/mapred-local/taskTracker/knoguchi/jobcache/job_201008310107_15105/attempt_201008310107_15105_m_000000_0/work/./abc/abc

I believe we should fail the task at this point.