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From "Edward J. Yoon" <>
Subject Re: [jira] Commented: (HAMA-282) Add superstep counter
Date Fri, 20 Aug 2010 07:04:34 GMT
Dear fdmanana, Thanks for your interest.

> Is this a good feature to start with?

Yes, I think so. BTW, you need to wait few days for this. The reason
is that the number of supersteps should be counted by the master
server but I'm heavily touching code of master/slave server for
HAMA-276 now. Moreover, there is a lot of hard coded path and TODO

However, It is OK to contribute only part of superstep counting.
Please see the part of BSPPeer.enterbarrier() method and heartbeat
messages between the master/slave servers.

And, let me explain more detail about the current status of HAMA TRUNK ....

When user submits a BSP job, the mechanism is almost same with the M/R
framework. The basic flow is as below:

1) User submits a BSP job to Hama BSP cluster.
2) Then, the BSPMaster will manage jobs that user have submitted to
the BSP cluster.
  2-1) Adding job to the scheduler.
  2-2) Assign Task to slaves.
3) the GroomServer (slave) copies job/jar file to local and launches
tasks on its host.

And, Hadoop RPC will be used for the BSP send, get and sync
communication among BSPPeer.

Now the no. 3) is not implemented yet.


On Thu, Aug 19, 2010 at 8:38 PM, Filipe Manana (JIRA) <> wrote:
>    [
> Filipe Manana commented on HAMA-282:
> ------------------------------------
> Hello,
> I would like to start contributing to Hama.
> Is this a good feature to start with?
> cheers
>> Add superstep counter
>> ---------------------
>>                 Key: HAMA-282
>>                 URL:
>>             Project: Hama
>>          Issue Type: Sub-task
>>            Reporter: Edward J. Yoon
> --
> This message is automatically generated by JIRA.
> -
> You can reply to this email to add a comment to the issue online.

Best Regards, Edward J. Yoon

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