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From "Daryn Sharp (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-9421) Convert SASL to use ProtoBuf and add lengths for non-blocking processing
Date Thu, 20 Jun 2013 14:36:22 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-9421?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13689283#comment-13689283
] 

Daryn Sharp commented on HADOOP-9421:
-------------------------------------

I don't understand the advantage of this patch.  At a minimum, here are major problems.
* Re-introduces the roundtrip I removed for tokens and usable by other auths in the future
* Appears to add yet another roundtrip for non-token auths
* Completely removes the ability for the client to chose the best or most preferred auth
* Ruins pluggable auths because the client now requires specific logic to "guess" if it can
do the new auth
* Prevents elimination of token use_ip
* Prevents supporting tokens for multi-interface, multi-A record, or CNAMEs
* Breaks my ability to add IP failover support
* Allows clients to do complete DOS attacks by tying up the socket indefinitely with initiates

Given my correction of the misunderstandings of my prior patch, what are the disadvantages?
                
> Convert SASL to use ProtoBuf and add lengths for non-blocking processing
> ------------------------------------------------------------------------
>
>                 Key: HADOOP-9421
>                 URL: https://issues.apache.org/jira/browse/HADOOP-9421
>             Project: Hadoop Common
>          Issue Type: Sub-task
>    Affects Versions: 2.0.3-alpha
>            Reporter: Sanjay Radia
>            Assignee: Daryn Sharp
>            Priority: Blocker
>         Attachments: HADOOP-9421.patch, HADOOP-9421.patch, HADOOP-9421.patch, HADOOP-9421.patch,
HADOOP-9421.patch, HADOOP-9421.patch, HADOOP-9421.patch, HADOOP-9421.patch, HADOOP-9421-v2-demo.patch
>
>


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