[jira] [Created] (HADOOP-9438) LocalFileContext does not throw an exception on mkdir for already existing directory

["Robert Joseph Evans (JIRA)" <ji...@apache.org>]

Robert Joseph Evans created HADOOP-9438:
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             Summary: LocalFileContext does not throw an exception on mkdir for already existing directory
                 Key: HADOOP-9438
                 URL: https://issues.apache.org/jira/browse/HADOOP-9438
             Project: Hadoop Common
          Issue Type: Bug
            Reporter: Robert Joseph Evans
            Priority: Critical


according to 
http://hadoop.apache.org/docs/current/api/org/apache/hadoop/fs/FileContext.html#mkdir%28org.apache.hadoop.fs.Path,%20org.apache.hadoop.fs.permission.FsPermission,%20boolean%29

should throw a FileAlreadyExistsException if the directory already exists.

I tested this and 
{code}
FileContext lfc = FileContext.getLocalFSFileContext(new Configuration());
Path p = new Path("/tmp/bobby.12345");
FsPermission cachePerms = new FsPermission((short) 0755);
lfc.mkdir(p, cachePerms, false);
lfc.mkdir(p, cachePerms, false);
{code}

never throws an exception.

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