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Colin Patrick McCabe commented on HADOOP-10246:
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I agree that we should have more tests for this. However, the current behavior
seems correct to me. It's modelled closely on the traditional POSIX behavior,
where {{mkdir}} honors {{umask}}, but {{chmod}} does not. Anything else would
be surprising for users coming from traditional filesystems.
Another reason for the current behavior is that if {{chmod}} consulted
{{umask}}, there would be no way for users to set less restrictive permissions
than specified in {{umask}}. This is contrary to the purpose of {{umask}},
which is just to be a helpful default, not a hard constraint.
define FS permissions model with tests
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Key: HADOOP-10246
URL: https://issues.apache.org/jira/browse/HADOOP-10246
Project: Hadoop Common
Issue Type: Sub-task
Components: fs
Reporter: Steve Loughran
Priority: Minor
It's interesting that HDFS mkdirs(dir, permission) uses the umask, but
setPermissions() does not
The permissions model, including umask logic should be defined and have tests
implemented by those filesystems that support permissions-based security
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