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From "Jayush Luniya (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (AMBARI-17888) Create configuration flag to prevent changing of directory permissions
Date Tue, 16 Aug 2016 02:37:20 GMT

     [ https://issues.apache.org/jira/browse/AMBARI-17888?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Jayush Luniya updated AMBARI-17888:
-----------------------------------
    Assignee: Siddharth Wagle  (was: Jayush Luniya)

> Create configuration flag to prevent changing of directory permissions
> ----------------------------------------------------------------------
>
>                 Key: AMBARI-17888
>                 URL: https://issues.apache.org/jira/browse/AMBARI-17888
>             Project: Ambari
>          Issue Type: Task
>          Components: ambari-agent
>    Affects Versions: 2.2.2
>            Reporter: Siddharth Wagle
>            Assignee: Siddharth Wagle
>             Fix For: 2.4.0
>
>         Attachments: AMBARI-17888-1.patch
>
>
> A common method of addressing failed disks, which is to set unwritable permissions on
a directory such as /hadoop10 within the root filesystem.
> Once mounted, the mounted filesystem will overlay the correct permissions structure,
allowing hdfs to write to the mounted disk.
> In the case of a failed mount operation, the associated /hadoop10 directory will be unwritable
by hdfs.
> However, Ambari will see the visible directory with incorrect permissions, and "fix"
the permissions back to a writable directory-- resulting in the datanode filling the root
partition of a machine.
> We need to prevent ambari from changing permissions on YARN local and HDFS data dirs.



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