Hello, everyone, I've got a question here and I really need your advice. Background: The Hadoop version is CDH3u1. I've got 8 nodes on my cluster, one as namenode/jobtracker/master, the others asdatanode/jtasktracker/regionserver. I've backed up the namenode by creating a directory via NFS.
I'm wondering whether I should back up the hbase master or not. Is there any possibility of data loss if I don't back up the hbase master? Also, if I back up the hbase master and hope that the backup hbase master continues to work when the real master not working, should I separate the hbase master from the hadoop namenode? Here is my concern: As you know, when the master of the cluster went down, the cluster would crash(since the namenode is on the master node). And I suppose the backup master would not get to work until the hadoop cluster back to normal. I would really appreciate it if you could comment on my question here. Thank you, guys. Best wishes, Xian Wu
