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https://issues.apache.org/jira/browse/HDFS-14619?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16875262#comment-16875262
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Istvan Fajth commented on HDFS-14619:
-------------------------------------
Based on the description and the explanation and also further reviewing the
things, I think this is not a problem, [~smeng] if you think so as well, then
we may close this one as well as I have closed the related issue already.
> chmod changes the mask when ACL is enabled
> ------------------------------------------
>
> Key: HDFS-14619
> URL: https://issues.apache.org/jira/browse/HDFS-14619
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: hdfs
> Affects Versions: 3.1.2
> Reporter: Siyao Meng
> Priority: Major
>
> When setting a directory's permission with HDFS shell chmod, it changes the
> ACL mask instead of the permission bits:
> {code:bash}
> $ sudo -u impala hdfs dfs -getfacl /user/hive/warehouse/exttablename/key=1/
> # file: /user/hive/warehouse/exttablename/key=1
> # owner: hive
> # group: hive
> user::rwx
> user:impala:rwx #effective:r-x
> group::rwx #effective:r-x
> mask::r-x
> other::r-x
> default:user::rwx
> default:user:impala:rwx
> default:group::rwx
> default:mask::rwx
> default:other::rwx
> $ sudo -u hdfs hdfs dfs -chmod 777 /user/hive/warehouse/exttablename/key=1/
> $ sudo -u impala hdfs dfs -getfacl /user/hive/warehouse/exttablename/key=1/
> # file: /user/hive/warehouse/exttablename/key=1
> # owner: hive
> # group: hive
> user::rwx
> user:impala:rwx
> group::rwx
> mask::rwx
> other::rwx
> default:user::rwx
> default:user:impala:rwx
> default:group::rwx
> default:mask::rwx
> default:other::rwx
> $ sudo -u hdfs hdfs dfs -chmod 755 /user/hive/warehouse/exttablename/key=1/
> $ sudo -u impala hdfs dfs -getfacl /user/hive/warehouse/exttablename/key=1/
> # file: /user/hive/warehouse/exttablename/key=1
> # owner: hive
> # group: hive
> user::rwx
> user:impala:rwx #effective:r-x
> group::rwx #effective:r-x
> mask::r-x
> other::r-x
> default:user::rwx
> default:user:impala:rwx
> default:group::rwx
> default:mask::rwx
> default:other::rwx
> $ sudo -u impala hdfs dfs -touch /user/hive/warehouse/exttablename/key=1/file
> touch: Permission denied: user=impala, access=WRITE,
> inode="/user/hive/warehouse/exttablename/key=1/file":hive:hive:drwxr-xr-x
> {code}
> The cluster has dfs.namenode.acls.enabled=true and
> dfs.namenode.posix.acl.inheritance.enabled=true.
> As far as I understand, the chmod should change the permission bits instead
> of the ACL mask. CMIIW
> Might be related to HDFS-14517. [~pifta]
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