On Wed, Oct 19, 2011 at 11:59 PM, Xian Woo <[email protected]> wrote: > 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? >
No. Master does not hold 'state'. Any state it needs it keeps out in zookeeper. > 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. > That is right. HBase won't work when NameNode is down. St.Ack
