[jira] [Created] (HADOOP-14820) Fix for HDFS semantics parity for mkdirs -p

["Sivaguru Sankaridurg (JIRA)" <ji...@apache.org>]

Sivaguru Sankaridurg created HADOOP-14820:
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             Summary:  Fix for HDFS semantics parity for mkdirs -p
                 Key: HADOOP-14820
                 URL: https://issues.apache.org/jira/browse/HADOOP-14820
             Project: Hadoop Common
          Issue Type: Bug
          Components: fs/azure
            Reporter: Sivaguru Sankaridurg
            Assignee: Sivaguru Sankaridurg


No authorization checks should be made when a user tries to create (mkdirs -p) an existing folder hierarchy.

For example, if we start with _/home/hdiuser/prefix_ pre-created, and do the following operations, the results should be as shown below.

{noformat}
hdiuser@hn0-0d2f67:~$ sudo chown root:root prefix
hdiuser@hn0-0d2f67:~$ sudo chmod 555 prefix

hdiuser@hn0-0d2f67:~$ ls -l
dr-xr-xr-x 3 root    root      4096 Aug 29 08:25 prefix

hdiuser@hn0-0d2f67:~$ mkdir -p /home
hdiuser@hn0-0d2f67:~$ mkdir -p /home/hdiuser
hdiuser@hn0-0d2f67:~$ mkdir -p /home/hdiuser/prefix
hdiuser@hn0-0d2f67:~$ mkdir -p /home/hdiuser/prefix/1
mkdir: cannot create directory â/home/hdiuser/prefix/1â: Permission denied
The first three mkdirs succeed, because the ancestor is already present. The fourth one fails because of a permission check against the (shorter) ancestor (as compared to the path being created).
{noformat}




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