Remus Rusanu created YARN-2485:
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Summary: Fix WSCE folder/file/classpathJar permission/order when
running as non-admin
Key: YARN-2485
URL: https://issues.apache.org/jira/browse/YARN-2485
Project: Hadoop YARN
Issue Type: Sub-task
Components: nodemanager
Reporter: Remus Rusanu
Assignee: Remus Rusanu
The WSCE creates the local, usercache, filecache appcache dirs in the normal
DefaultContainerExecutor way, and then assigns ownership to the userprocess.
The WSCE configured group is added, but the permission masks used (710) do no
give write permissions on the appcache/filecache/usercache folder to the NM
itself.
The creation of these folders, as well as the creation of the temporary
classPath jar files must succeed even after thes file/dir ownership is
relinquished to the task user and the NM does not run as a local Administrator.
LCE handles all these dirs inside the container-executor app (root). The
classpathJar issue does not exists on Linux.
The dirs can be handled by simply delaying the transfer (create all dirs and
temp files, then assign ownership in bulk) but the task classpathJar is
'special' and needs some refactoring of the NM launch sequence.
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