hadoop-hdfs-issues mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Devaraj Das (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-2856) Fix block protocol so that Datanodes don't require root or jsvc
Date Tue, 31 Jan 2012 00:55:10 GMT

    [ https://issues.apache.org/jira/browse/HDFS-2856?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13196596#comment-13196596
] 

Devaraj Das commented on HDFS-2856:
-----------------------------------

We considered this option back at the time when we were trying to secure the datanode protocols.
The problem with this approach is the increased number of round-trips that the handshake would
introduce in every hop in the write-pipeline. We hadn't benchmark this though..
                
> Fix block protocol so that Datanodes don't require root or jsvc
> ---------------------------------------------------------------
>
>                 Key: HDFS-2856
>                 URL: https://issues.apache.org/jira/browse/HDFS-2856
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>          Components: data-node, security
>            Reporter: Owen O'Malley
>
> Since we send the block tokens unencrypted to the datanode, we currently start the datanode
as root using jsvc and get a secure (< 1024) port.
> If we have the datanode generate a nonce and send it on the connection and the sends
an hmac of the nonce back instead of the block token it won't reveal any secrets. Thus, we
wouldn't require a secure port and would not require root or jsvc.

--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators: https://issues.apache.org/jira/secure/ContactAdministrators!default.jspa
For more information on JIRA, see: http://www.atlassian.com/software/jira

        

Mime
View raw message