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Posted to mapreduce-dev@hadoop.apache.org by "Amareshwari Sriramadasu (JIRA)" <ji...@apache.org> on 2010/02/01 10:35:51 UTC
[jira] Created: (MAPREDUCE-1435) symlinks in cwd of the task are
not handled properly after MAPREDUCE-896
symlinks in cwd of the task are not handled properly after MAPREDUCE-896
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Key: MAPREDUCE-1435
URL: https://issues.apache.org/jira/browse/MAPREDUCE-1435
Project: Hadoop Map/Reduce
Issue Type: Bug
Components: tasktracker
Affects Versions: 0.22.0
Reporter: Amareshwari Sriramadasu
Fix For: 0.22.0
With JVM reuse, TaskRunner.setupWorkDir() lists the contents of workDir and does a fs.delete on each path listed. If the listed file is a symlink to directory, it will delete the contents of those linked directories. This would delete files from distributed cache and jars directory,if mapred.create.symlink is true.
Changing ownership/permissions of symlinks through ENABLE_TASK_FOR_CLEANUP would change ownership/permissions of underlying files.
This is observed by Karam while running streaming jobs with DistributedCache and jvm reuse.
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