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https://issues.apache.org/jira/browse/HDFS-10650?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15388627#comment-15388627
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Chris Nauroth commented on HDFS-10650:
--------------------------------------
I'm not aware of any history behind an intentional choice to use 666 as the
default here. It looks incorrect to me. The only thing somewhat related that
I remember is HADOOP-9155, which introduced the split of file vs. directory
default permissions, but that didn't touch the {{applyUMask}} logic. It would
be good to do a thorough review of all the code paths that end up routing
through {{DFSClient#applyUMask}} to make sure this is safe.
> DFSClient#mkdirs and DFSClient#primitiveMkdir should use default directory
> permission
> -------------------------------------------------------------------------------------
>
> Key: HDFS-10650
> URL: https://issues.apache.org/jira/browse/HDFS-10650
> Project: Hadoop HDFS
> Issue Type: Bug
> Affects Versions: 2.6.0
> Reporter: John Zhuge
> Assignee: John Zhuge
> Priority: Minor
> Attachments: HDFS-10650.001.patch, HDFS-10650.002.patch
>
>
> These 2 DFSClient methods should use default directory permission to create a
> directory.
> {code:java}
> public boolean mkdirs(String src, FsPermission permission,
> boolean createParent) throws IOException {
> if (permission == null) {
> permission = FsPermission.getDefault();
> }
> {code}
> {code:java}
> public boolean primitiveMkdir(String src, FsPermission absPermission,
> boolean createParent)
> throws IOException {
> checkOpen();
> if (absPermission == null) {
> absPermission =
> FsPermission.getDefault().applyUMask(dfsClientConf.uMask);
> }
> {code}
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