11:07 AM me: hi. is there some progress on kill task issue? 11:08 AM fdmanana: hi
no :( only read and understood most of hadoop's jvm task umbilical interface/protocol 11:09 AM me: I see. i'm going to re-implement the 'BSPTaskRunner' class. fdmanana: why? 11:10 AM as far as I remember it's a small class, no? 11:13 AM me: in hadoop, tasks are executed on seperate JVMs from TaskTracker, with some java arguments. 11:14 AM fdmanana: right including the task log dir, task id, jvm id, etc me: currently, BSPtask runs on GroomServer JVM. yup. it also seems related with kill method. right? 11:15 AM fdmanana: right me: OKOK. fdmanana: it's easier to kill abruptly a jvm (child os process) rather than a java thread me: yes.. fdmanana: once the child jvm is spawned, it knows what to do, since we pass it the job class/jar name etc 11:16 AM also the child jvm can taslk to the groom server through rpc (to report progress, and report completion for e.g.) 11:20 AM me: yes. today, i can work on BSPTaskRunner. i think, it's better to separate it to small tasks. is it OK? fdmanana: yes, ok for me :) me: thanks! ;-) -- Best Regards, Edward J. Yoon http://blog.udanax.org http://twitter.com/eddieyoon
