On Fri, Aug 20, 2010 at 8:04 AM, Edward J. Yoon <[email protected]>wrote:
> Dear fdmanana, Thanks for your interest. > You're welcome. It's been a while now that I got interested in Hama. However I haven't yet looked carefully to its code. > > > 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 > things. > > 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. > Thanks for explanation :) I'm finishing reading the BSP paper from Leslie. I'll then jump into the code. cheers > > Thanks. > > On Thu, Aug 19, 2010 at 8:38 PM, Filipe Manana (JIRA) <[email protected]> > wrote: > > > > [ > https://issues.apache.org/jira/browse/HAMA-282?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12900255#action_12900255] > > > > 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: https://issues.apache.org/jira/browse/HAMA-282 > >> 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 > [email protected] > http://blog.udanax.org > -- Filipe David Manana, [email protected], [email protected] "Reasonable men adapt themselves to the world. Unreasonable men adapt the world to themselves. That's why all progress depends on unreasonable men."
