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https://issues.apache.org/jira/browse/HDFS-13170?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16388197#comment-16388197
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Xiao Chen commented on HDFS-13170:
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Thanks Stephen for revving! the new javadoc thing is because of misnaming, I
can fix that at commit time.
> Port webhdfs unmaskedpermission parameter to HTTPFS
> ---------------------------------------------------
>
> Key: HDFS-13170
> URL: https://issues.apache.org/jira/browse/HDFS-13170
> Project: Hadoop HDFS
> Issue Type: Improvement
> Affects Versions: 3.0.0-alpha2
> Reporter: Stephen O'Donnell
> Assignee: Stephen O'Donnell
> Priority: Major
> Attachments: HDFS-13170.001.patch, HDFS-13170.002.patch,
> HDFS-13170.003.patch, HDFS-13170.004.patch
>
>
> HDFS-6962 fixed a long standing issue where default ACLs are not correctly
> applied to files when they are created from the hadoop shell.
> With this change, if you create a file with default ACLs against the parent
> directory, with dfs.namenode.posix.acl.inheritance.enabled=false, the result
> is:
> {code}
> # file: /test_acl/file_from_shell_off
> # owner: user1
> # group: supergroup
> user::rw-
> user:user1:rwx #effective:r--
> user:user2:rwx #effective:r--
> group::r-x #effective:r--
> group:users:rwx #effective:r--
> mask::r--
> other::r--
> {code}
> And if you enable this, to fix the bug above, the result is as you would
> expect:
> {code}
> # file: /test_acl/file_from_shell
> # owner: user1
> # group: supergroup
> user::rw-
> user:user1:rwx #effective:rw-
> user:user2:rwx #effective:rw-
> group::r-x #effective:r--
> group:users:rwx #effective:rw-
> mask::rw-
> other::r--
> {code}
> If I then create a file over HTTPFS or webHDFS, the behaviour is not the same
> as above:
> {code}
> # file: /test_acl/default_permissions
> # owner: user1
> # group: supergroup
> user::rwx
> user:user1:rwx #effective:r-x
> user:user2:rwx #effective:r-x
> group::r-x
> group:users:rwx #effective:r-x
> mask::r-x
> other::r-x
> {code}
> Notice the mask is set to r-x and this remove the write permission on the new
> file.
> As part of HDFS-6962 a new parameter was added to webhdfs
> 'unmaskedpermission'. By passing it to a webhdfs call, it can result in the
> same behaviour as when a file is written from the CLI:
> {code}
> curl -i -X PUT -T test.txt --header "Content-Type:application/octet-stream"
> "http://namenode:50075/webhdfs/v1/test_acl/unmasked__770?op=CREATE&user.name=user1&namenoderpcaddress=namenode:8020&overwrite=false&unmaskedpermission=770";
> # file: /test_acl/unmasked__770
> # owner: user1
> # group: supergroup
> user::rwx
> user:user1:rwx
> user:user2:rwx
> group::r-x
> group:users:rwx
> mask::rwx
> other::---
> {code}
> However, this parameter was never ported to HTTPFS.
> This Jira is to replicate the same changes to HTTPFS so this parameter is
> available there too.
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