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From "Doug Cutting (JIRA)" <j...@apache.org>
Subject [jira] Updated: (HADOOP-2552) enable hdfs permission checking by default
Date Tue, 08 Jan 2008 22:38:34 GMT

     [ https://issues.apache.org/jira/browse/HADOOP-2552?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

Doug Cutting updated HADOOP-2552:

    Attachment: HADOOP-2552.patch

> enable hdfs permission checking by default
> ------------------------------------------
>                 Key: HADOOP-2552
>                 URL: https://issues.apache.org/jira/browse/HADOOP-2552
>             Project: Hadoop
>          Issue Type: Improvement
>          Components: dfs
>            Reporter: Doug Cutting
>             Fix For: 0.16.0
>         Attachments: HADOOP-2552.patch
> We should enable permission checking in dfs by default.  Currently, on upgrade, all file
permissions are 777, so this is a back-compatible change.  After an upgrade folks can change
owners and groups and limit permissions, and things will work as expected.
> The current default, dfs.permissions=false, gives inconsistent behaviour: permissions
are displayed in 'ls' and returned by the FileSystem APIs, but they're not enforced.  In future
releases we will certainly want dfs.permissions=true to be the default, and making it so now
will thus also avoid an incompatible change.
> dfs.permissions=false should be an optional, non-default configuration that some sites
may decide to use.  It is further defined in HADOOP-2543.

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