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From "Rohini Palaniswamy (Updated) (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HIVE-2504) Warehouse table subdirectories should inherit the group permissions of the warehouse parent directory
Date Mon, 09 Apr 2012 18:41:18 GMT

     [ https://issues.apache.org/jira/browse/HIVE-2504?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Rohini Palaniswamy updated HIVE-2504:
-------------------------------------

    Attachment: HIVE-2504-1.patch

Added hive.warehouse.subdir.inherit.perms which is false by default. The default behaviour
of hive-0.8 stays. i.e directories will be created with the permissions of dfs.umask or dfs.umaskmode.
If hive.warehouse.subdir.inherit.perms is set to true, then table directories will inherit
the permission of the default warehouse or the custom database location. This comes in handy
when you have databases created with different permissions or if the warehouse directory has
permissions like 775. 

Ashutosh,
   Your argument of warehouse having 700 permissions will not hold. If warehouse has 700 and
even if the table directories have 755 or 775 they will not be accessible by any one other
than the owner because if you don't have access to the parent directory you cannot access
sub-directories in dfs (Same as Linux). So the warehouse has to be at least 755 or 750 to
start with. So with the initial patch, the sub-directories would have been created with 775.
But with my patch, they would have been created the same as warehouse directory(755 or 750)
which would still allow read access to group. But anyways to avoid any confusion and provide
backward compatibility added the new config.
                
> Warehouse table subdirectories should inherit the group permissions of the warehouse
parent directory
> -----------------------------------------------------------------------------------------------------
>
>                 Key: HIVE-2504
>                 URL: https://issues.apache.org/jira/browse/HIVE-2504
>             Project: Hive
>          Issue Type: Bug
>          Components: Metastore
>            Reporter: Carl Steinbach
>            Assignee: Rohini Palaniswamy
>             Fix For: 0.9.0
>
>         Attachments: HIVE-2504-1.patch, HIVE-2504.patch, HIVE-2504.patch
>
>
> When the Hive Metastore creates a subdirectory in the Hive warehouse for
> a new table it does so with the default HDFS permissions. Since the default
> dfs.umask value is 022, this means that the new subdirectory will not inherit the
> group write permissions of the hive warehouse directory.
> We should make the umask used by Warehouse.mkdirs() configurable, and set
> it to use a default value of 002.

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