virtualbox is known for causing instabilities in the host-kernel (or at least, it used to). You might be better off asking for support there: https://www.virtualbox.org/wiki/Bugtracker
- André On Wed, Sep 17, 2014 at 4:25 AM, Li Li <[email protected]> wrote: > hi all, > I know it's not a problem related to hadoop but administrator can > not find any clues. > I have a machine with 24 core and 64GB memory with ubuntu 12.04 > LTS. we use virtual box to create 4 virtual machine. Each vm has 10GB > memory and 6 core. > I have setup a small hadoop 1.2.1 cluster with one > jobtracker/namenode and 3 tasktracker/datanode. Each tasktrack has 4 > mapper slots and 4 reducers slot. > But it always crashs(the host machine crash, not vm crash). > Sometimes it crashes for the first map-reduce job. Sometimes it can > run a few jobs. > is there any clues? I have checked the sys log and can find any > thing useful. Using monitor system, The cpu and io is not abnormal. > The only abnormal phenomenon is context switch is high. about 40k. > -- André Kelpe [email protected] http://concurrentinc.com
