Just a minor comment. I read the user guide and notice the architecture described using heartbeat. If the patch 346 takes effect, the communication of heartbeat should be changed to opposite direction because the current task assignment is dispatched by BSPMaster proactively. 2011/2/16 Edward J. Yoon : > Hi all, I made a user guide for Hama-0.2 version. > > http://people.apache.org/~edwardyoon/ApacheHama-0.2_UserGuide.pdf > > I hope it's helpful for you. > Thanks! > > -- > Best Regards, Edward J. Yoon > http://blog.udanax.org > http://twitter.com/eddieyoon > -- ChiaHung Lin @ nuk, tw.