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From "Junping Du (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-6811) [ATS1.5] All history logs should be kept under its own User Directory.
Date Thu, 03 Aug 2017 21:26:00 GMT

    [ https://issues.apache.org/jira/browse/YARN-6811?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16113524#comment-16113524

Junping Du commented on YARN-6811:

Thanks for updating the patch and addressing my comments, [~rohithsharma]. Latest patch LGTM.

+1. Will commit it tomorrow if no other comments.

> [ATS1.5]  All history logs should be kept under its own User Directory.
> -----------------------------------------------------------------------
>                 Key: YARN-6811
>                 URL: https://issues.apache.org/jira/browse/YARN-6811
>             Project: Hadoop YARN
>          Issue Type: Improvement
>          Components: timelineclient, timelineserver
>            Reporter: Rohith Sharma K S
>            Assignee: Rohith Sharma K S
>         Attachments: YARN-6811.01.patch, YARN-6811.02.patch
> ATS1.5 allows to store history data in underlying FileSystem folder path i.e */acitve-dir*
and */done-dir*. These base directories are protected for unauthorized user access for other
users data by setting sticky bit for /active-dir. 
> But object store filesystems such as WASB does not have user access control on folders
and files. When WASB are used as underlying file system for ATS1.5, the history data which
are stored in FS are accessible to all users. *This would be a security risk*
> I would propose to keep history data under its own user directory i.e */active-dir/$USER*.
Even this do not solve basic user access from FS, but it provides capability to plugin Apache
Ranger policies for each user folders. One thing to note that setting policies to each user
folder is admin responsibility. But grouping all history data of one user folder allows to
set policies so that user access control is achieved. 

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