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From "Clay B. (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-14234) Limit WebHDFS to specifc user, host, directory triples
Date Mon, 13 May 2019 07:14:00 GMT

    [ https://issues.apache.org/jira/browse/HDFS-14234?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16838321#comment-16838321
] 

Clay B. commented on HDFS-14234:
--------------------------------

Oops, 0005 fixes more checkstyle, the broken test and at least one find bug as well as adding
a small bit of documentation.

> Limit WebHDFS to specifc user, host, directory triples
> ------------------------------------------------------
>
>                 Key: HDFS-14234
>                 URL: https://issues.apache.org/jira/browse/HDFS-14234
>             Project: Hadoop HDFS
>          Issue Type: New Feature
>          Components: webhdfs
>            Reporter: Clay B.
>            Assignee: Clay B.
>            Priority: Trivial
>         Attachments: 0001-HDFS-14234.-Limit-WebHDFS-to-specifc-user-host-direc.patch,
0002-HDFS-14234.-Limit-WebHDFS-to-specifc-user-host-direc.patch, 0003-HDFS-14234.-Limit-WebHDFS-to-specifc-user-host-direc.patch,
0004-HDFS-14234.-Limit-WebHDFS-to-specifc-user-host-direc.patch, 0005-HDFS-14234.-Limit-WebHDFS-to-specifc-user-host-direc.patch
>
>
> For those who have multiple network zones, it is useful to prevent certain zones from
downloading data from WebHDFS while still allowing uploads. This can enable functionality
of HDFS as a dropbox for data - data goes in but can not be pulled back out. (Motivation further
presented in [StrangeLoop 2018 Of Data Dropboxes and Data Gloveboxes|https://www.thestrangeloop.com/2018/of-data-dropboxes-and-data-gloveboxes.html]).
> Ideally, one could limit the datanodes from returning data via an [{{OPEN}}|https://hadoop.apache.org/docs/current/hadoop-project-dist/hadoop-hdfs/WebHDFS.html#Open_and_Read_a_File]
but still allow things such as [{{GETFILECHECKSUM}}|https://hadoop.apache.org/docs/current/hadoop-project-dist/hadoop-hdfs/WebHDFS.html#Get_File_Checksum]
and {{[{{CREATE}}|https://hadoop.apache.org/docs/current/hadoop-project-dist/hadoop-hdfs/WebHDFS.html#Create_and_Write_to_a_File]}}.



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