zhouyingchao created HDFS-8419:
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Summary: chmod impact user's effective ACL
Key: HDFS-8419
URL: https://issues.apache.org/jira/browse/HDFS-8419
Project: Hadoop HDFS
Issue Type: Bug
Components: HDFS
Affects Versions: 2.6.0
Reporter: zhouyingchao
Assignee: zhouyingchao
I set a directory's ACL to assign rwx permission to a user h_user1. Later, I
used chmod to change the group permission to r-x. I understand chmod of a acl
enabled file would only change the permission mask. What's make me surprise is
that the operation will change the h_user1's effective ACL from rwx to r-x.
Following are ACLs before any operaton:
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# file: /grptest
# owner: hdfs_tst_admin
# group: supergroup
user::rwx
user:h_user1:rwx
group::r-x
mask::rwx
other::---
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Following are ACLs after "chmod 750 /grptest"
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# file: /grptest
# owner: hdfs_tst_admin
# group: supergroup
user::rwx
user:hdfs_admin:rwx #effective:r-x
group::r-x
mask::r-x
other::---
# file: /grptest
# owner: hdfs_tst_admin
# group: supergroup
user::rwx
user:h_user1:rwx #effective:r-x
group::r-x
mask::r-x
other::---
-----------------------------------------
I'm wondering if this behavior is by design. If not, I'd like to fix the
issue. Thank you.
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