Chuan Liu created MAPREDUCE-5357:
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Summary: Job staging directory owner checking could fail on Windows
Key: MAPREDUCE-5357
URL: https://issues.apache.org/jira/browse/MAPREDUCE-5357
Project: Hadoop Map/Reduce
Issue Type: Bug
Affects Versions: 3.0.0, 2.1.0-beta
Reporter: Chuan Liu
Assignee: Chuan Liu
Priority: Minor
In {{JobSubmissionFiles.getStagingDir()}}, we have following code that will
throw exception if the directory owner is not the current user.
{code:java}
String owner = fsStatus.getOwner();
if (!(owner.equals(currentUser) || owner.equals(realUser))) {
throw new IOException("The ownership on the staging directory " +
stagingArea + " is not as expected. " +
"It is owned by " + owner + ". The directory must " +
"be owned by the submitter " + currentUser + " or " +
"by " + realUser);
}
{code}
This check will fail on Windows when the underlying file system is
LocalFileSystem. Because on Windows, the default file or directory owner could
be "Administrators" group if the user belongs to "Administrators" group.
Quite a few MR unit tests that runs MR mini cluster with localFs as underlying
file system fail because of this.
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