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https://issues.apache.org/jira/browse/HADOOP-14820?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16148486#comment-16148486
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Sivaguru Sankaridurg commented on HADOOP-14820:
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*NativeAzureFileSystem.java
L1714 - * Thanks for pointing this out. The fix to
{noformat}getAncestor(){noformat} should take care of this. This is the correct
fix. The call to {noformat}performAuthCheck{noformat} on L1714 is required.
*L2426* - This has been fixed. Please see changes to
{noformat}getAncestor{noformat} in 003.patch. The naming is consistent with the
definition mentioned at
[https://hadoop.apache.org/docs/current/hadoop-project-dist/hadoop-hdfs/HdfsPermissionsGuide.html#Permission_Checks].
{noformat} Ancestor: The last existing component of the requested path. For
example, for the path /foo/bar/baz, the ancestor path is /foo/bar if /foo/bar
exists. The ancestor path is /foo if /foo exists but /foo/bar does not
exist.{noformat}
*L2459* - Same as above.
> 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
> Labels: azure, fs, secure, wasb
> Attachments: HADOOP-14820.001.patch, HADOOP-14820.002.patch
>
>
> 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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