Hi Bejoy, Thank you for your answer. - I read about Secondary Name Node, but it is not realtime solution. In this solution are some minutes delay... - With NFS how can i make it, the Data Node automatic change to another Name Node..? Maybe this: http://wiki.apache.org/hadoop/NameNodeFailover or i found this https://issues.apache.org/jira/browse/HDFS-976
Somebody has experience with Avatar Node? Tibi 2012/3/22 Bejoy Ks <bejoy.had...@gmail.com> > Hi Tibi > To recover from a Name Node failure, the following are > the suggested approaches as of now > > - Maintain a SNN which does periodic check pointing > * > http://hadoop.apache.org/common/docs/current/hdfs_user_guide.html#Secondary+NameNode > * > - Make sure you configure a remote NFS mount, so you have a remote copy of > fs image on another server even if you fully lose out the running NN > > There is some awesome work going on for HA within hadoop project itself, > for details > *https://issues.apache.org/jira/browse/HDFS-1623* > > Regards > Bejoy KS > > > On Thu, Mar 22, 2012 at 7:56 PM, Tibor Korocz <tkor...@gmail.com> wrote: > >> Hi, >> >> I am new in Hadoop. I created a four nodes cluster 3 slaves, and 1 master >> (this is onyl the test system). >> It works fine, i used this howto: >> http://www.michael-noll.com/tutorials/running-hadoop-on-ubuntu-linux-multi-node-cluster/. >> My question is, what is the best solution to make the master(namenode) >> fail over, i read a lot, but i dont now what is the best. >> I found this howto: >> http://www.cloudera.com/blog/2009/07/hadoop-ha-configuration/ , but if >> it is possible, i do not want to use DRBD. >> I hope somebody can help me. Sorry my english.... :) >> >> Thanks. >> Tibi >> > >
