Is "Secondary Name Node" in hadoop can be used in hbase or is it what we can expect in 0.20?
Jae On Thu, Apr 16, 2009 at 7:38 PM, Jae Joo <[email protected]> wrote: > I have read and foind that the master node is SPOF and 0.20 will have > failover system for master node. Any update or any solution to avio > SPOF? > Jae > > On 4/16/09, Billy Pearson <[email protected]> wrote: > > hbase and hadoop both have a single node (namenode & master) that tell > the > > clients where stuff is that's all they do is keep up with > > where stuff is they do not handle the getting of the data the client api > > will go to the node with the data they tell it to find the data and get > the > > data. > > > > as for adding new nodes to hadoop to balance the cluster you can use > > bin/start-balancer.sh -threshold 5 > > Where 5 is the % you want the nodes to be with in each other in terms of > > used % > > > > Billy > > > > > > "Jae Joo" <[email protected]> wrote in > > message news:[email protected]. > .. > >> Hi, > >> > >> We are doing some feasibility study of HBase and have questions. > >> 1. Once we have build tables on certain number node and decide to add > more > >> nodes, how it is working? I know that it is not hbase, but hadoop > >> questions. > >> Will it automatically redistribute the files or start utilizing the new > >> node > >> for new inserted records? > >> > >> 2. Is there any way to have multile master nodes? Should all traffis (or > >> requests) be going to SIngle Master node to access the data from hbase? > >> > >> > >> Thanks, > >> > >> Jae > >> > > > > > > > > -- > Sent from my mobile device >
