TT should fail task immediately if userlog dir cannot be created
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Key: MAPREDUCE-2592
URL: https://issues.apache.org/jira/browse/MAPREDUCE-2592
Project: Hadoop Map/Reduce
Issue Type: Improvement
Components: tasktracker
Affects Versions: 0.23.0
Reporter: Todd Lipcon
Fix For: 0.23.0
Currently, TaskRunner will log the message "mkdirs failed. Ignoring" if it
fails to mkdir the userlog directory for a task. Then, it goes on to spawn
taskjvm.sh which tries to redirect output into the userlogs dir, thus failing
with exit code 1. This leads to error messages that are very hard to diagnose
("task failed with exit status 1") in cases where the userlog directory has
either become inaccessible or has reached the maximum number of dirents (32000
in ext3)
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