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https://issues.apache.org/jira/browse/HDFS-14517?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Istvan Fajth resolved HDFS-14517.
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Resolution: Not A Problem
> Display bug in permissions when ACL mask is defined
> ---------------------------------------------------
>
> Key: HDFS-14517
> URL: https://issues.apache.org/jira/browse/HDFS-14517
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: namenode
> Environment: Tested on latest CDH integration, and CDH5 as well with
> the same result.
> Reporter: Istvan Fajth
> Priority: Minor
>
> When ACLs are enabled on a folder, the following sequence of commands provide
> the following result:
>
> {{$ hdfs dfs -mkdir /tmp/acl
> $ hdfs dfs -ls /tmp/acl
> $ hdfs dfs -ls /tmp
> Found 1 items
> drwxr-xr-x - hdfs supergroup 0 2019-05-28 11:48 /tmp/acl
> $ hdfs dfs -getfacl /tmp/acl
> # file: /tmp/acl
> # owner: hdfs
> # group: supergroup
> user::rwx
> group::r-x
> other::r-x
> $ hdfs dfs -setfacl -m mask::rwx /tmp/acl
> $ hdfs dfs -ls /tmp
> Found 1 items
> drwxrwxr-x+ - hdfs supergroup 0 2019-05-28 11:48 /tmp/acl
> drwx-wx-wx - hive supergroup 0 2019-05-27 23:48 /tmp/hive
> drwxrwxrwt - mapred hadoop 0 2019-05-28 01:32 /tmp/logs
> $ hdfs dfs -setfacl -m mask::r-- /tmp/acl
> $ hdfs dfs -ls /tmp
> Found 1 items
> drwxr--r-x+ - hdfs supergroup 0 2019-05-28 11:48 /tmp/acl
> $ hdfs dfs -setfacl -m mask::r-x /tmp/acl
> $ hdfs dfs -ls /tmp
> Found 1 items
> drwxr-xr-x+ - hdfs supergroup 0 2019-05-28 11:48 /tmp/acl
> $ hdfs dfs -getfacl /tmp/acl
> # file: /tmp/acl
> # owner: hdfs
> # group: supergroup
> user::rwx
> group::r-x
> mask::r-x
> other::r-x}}
>
> So the group permission representation is changing with the defined mask ACL
> instead of the group ACL or, maybe even better, the effective group ACL.
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