[ 
https://issues.apache.org/jira/browse/YARN-1915?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14095820#comment-14095820
 ] 

Daryn Sharp commented on YARN-1915:
-----------------------------------

I suspect it's because it removes the burden from the AM to strip the secret 
from the credentials so it doesn't leak to other processes.

> ClientToAMTokenMasterKey should be provided to AM at launch time
> ----------------------------------------------------------------
>
>                 Key: YARN-1915
>                 URL: https://issues.apache.org/jira/browse/YARN-1915
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>    Affects Versions: 2.2.0
>            Reporter: Hitesh Shah
>            Assignee: Jason Lowe
>            Priority: Critical
>         Attachments: YARN-1915.patch, YARN-1915v2.patch
>
>
> Currently, the AM receives the key as part of registration. This introduces a 
> race where a client can connect to the AM when the AM has not received the 
> key. 
> Current Flow:
> 1) AM needs to start the client listening service in order to get host:port 
> and send it to the RM as part of registration
> 2) RM gets the port info in register() and transitions the app to RUNNING. 
> Responds back with client secret to AM.
> 3) User asks RM for client token. Gets it and pings the AM. AM hasn't 
> received client secret from RM and so RPC itself rejects the request.



--
This message was sent by Atlassian JIRA
(v6.2#6252)

Reply via email to