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From "Sean Mackrory (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-14935) Azure: POSIX permissions are taking effect in access() method even when authorization is enabled
Date Thu, 26 Jul 2018 01:29:00 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-14935?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16556753#comment-16556753
] 

Sean Mackrory commented on HADOOP-14935:
----------------------------------------

I think the committed patch accidentally changed getFileStatusInternal to private, which gets
flagged in API compatibility tests (which we should probably add to Yetus - I know we had
the same automated tests running for Hadoop 3). See HADOOP-15632 where I intend to change
it back.

> Azure: POSIX permissions are taking effect in access() method even when authorization
is enabled
> ------------------------------------------------------------------------------------------------
>
>                 Key: HADOOP-14935
>                 URL: https://issues.apache.org/jira/browse/HADOOP-14935
>             Project: Hadoop Common
>          Issue Type: Sub-task
>          Components: fs/azure
>    Affects Versions: 2.9.0
>            Reporter: Santhosh G Nayak
>            Assignee: Santhosh G Nayak
>            Priority: Major
>             Fix For: 2.9.0, 3.1.0
>
>         Attachments: HADOOP-14935-003.patch, HADOOP-14935-004.patch, HADOOP-14935-005.patch,
HADOOP-14935.1.patch, HADOOP-14935.2.patch
>
>
> FileSystem implementation class for azure i.e. {{NativeAzureFileSystem}} does not override
{{access(path,mode)}} method and uses the default implementation from the base class. This
base implementaion uses the POSIX permissions to check if the requested user has access to
given path or not even when authorization is enabled, which is incorrect.
> {{NativeAzureFileSystem.access()}} in authorization enabled mode should use the authorization
mechanism provided instead of relying on the POSIX permission ons. So the proposal is to override
{{FileSystem.access()}} method in {{NativeAzureFileSystem}} such that it honors the authorization
mechanism configured in authorization enabled mode and falls back to POSIX permissions otherwise.



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