Great! I will give it a try. Thanks for your email.
On Tue, Sep 2, 2008 at 10:58 AM, Mikhail Yakshin <[EMAIL PROTECTED]>wrote: > On Tue, Sep 2, 2008 at 7:33 PM, Camilo Gonzalez wrote: > > I was wondering if there is a way to "Hot-Swap" Slave machines, for > example, > > in case an Slave machine fails while the Cluster is running and I want to > > mount a new Slave machine to replace the old one, is there a way to tell > the > > Master that a new Slave machine is Online without having to stop and > start > > again the Cluster? > > You don't have to restart entire cluster, you just have to run > datanode (DFS support) and/or tasktracker processes on fresh node. You > can do it using hadoop-daemon.sh, commands are "start datanode" and > "start tasktracker" respectively. There's no need for "hot swapping" > and "replacing" old slave machines with new ones pretending to be old > ones. You just plug new one in with new IP/hostname and it will > eventually start to do tasks as all other nodes. > > You don't really need any "hot standby" or any other high-availability > schemes. You just plug all possible slaves in and it will balance > everything out. > > -- > WBR, Mikhail Yakshin > -- Camilo A. Gonzalez Ing. de Sistemas Tel: 300 657 96 96
