hadoop-mapreduce-issues mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Mahadev konar (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (MAPREDUCE-3251) Network ACLs can prevent some clients to talk to MR ApplicationMaster
Date Thu, 15 Dec 2011 19:36:30 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-3251?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13170437#comment-13170437
] 

Mahadev konar commented on MAPREDUCE-3251:
------------------------------------------

@vinod,
 Good catch. You are right the patch needs more work. I am against reverting patches unless
they are really broken. We can continue on this jira itself. @Anupam, here is what we need
to do:

- when you find that a job is running, you need to return fake proxy that just returns fake
stubs on api calls.
- on a job completion, you will have to make sure that if its completed, you connect to history
server and get all the counters and others from it, on failed job (AM crash), you wont be
able to get anything from history server, so youll have to return a job failed error on that.


                
> Network ACLs can prevent some clients to talk to MR ApplicationMaster
> ---------------------------------------------------------------------
>
>                 Key: MAPREDUCE-3251
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-3251
>             Project: Hadoop Map/Reduce
>          Issue Type: Task
>          Components: mrv2
>    Affects Versions: 0.23.0
>            Reporter: Anupam Seth
>            Assignee: Anupam Seth
>            Priority: Critical
>             Fix For: 0.23.1
>
>         Attachments: MAPREDUCE-3251-branch_0_23.patch, MAPREDUCE-3251-branch_0_23.patch,
MAPREDUCE-3251-branch_0_23.patch, MAPREDUCE-3251-branch_0_23.patch, MAPREDUCE-3251_branch-0_23_preliminary.txt
>
>
> In 0.20.xxx, the JobClient while polling goes to JT to get the job status. With YARN,
AM can be launched on any port and the client will have to have ACL open to that port to talk
to AM and get the job status. When the client is within the same grid network access to AM
is not a problem. But some applications may have one installation per set of clusters and
may launch jobs even across such sets (on job trackers in another set of clusters). For that
to work only the JT port needs to be open currently. In case of YARN, all ports will have
to be opened up for things to work. That would be a security no-no.
> There are two possible solutions:
>   1) Make the job client only talk to RM (as an option) to get the job status. 
>   2) Limit the range of ports AM can listen on.
> Option 2) may not be favorable as there is no direct OS API to find a free port.

--
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