Task should fail when symlink creation fail
-------------------------------------------
Key: MAPREDUCE-2074
URL: https://issues.apache.org/jira/browse/MAPREDUCE-2074
Project: Hadoop Map/Reduce
Issue Type: Bug
Components: distributed-cache
Affects Versions: 0.20.2
Reporter: Koji Noguchi
Priority: Minor
Fix For: 0.22.0
If I pass an invalid symlink as
-Dmapred.cache.files=/user/knoguchi/onerecord.txt#abc/abc
Task only reports a WARN and goes on.
{noformat}
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
{noformat}
I believe we should fail the task at this point.
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