Hi, Based on the documentation I have read, there is one instance of a NameNode.
Are there recommended approaches on making the NameNode HA: 1.Have a backup which takes over. Data between primary and backup is shared thru shared files , DB etc. Also does having a single NameNode limit the no. of concurrent HDFS clients ? I understand that HDFS Readers and Writers use the DataNode(s) eventually, but the initial access point is the NameNode. I would really appreciate help on these (I am evaluating HDFS for use as a Concurrent, Reliable, Performant Distributed File System). Thanx, Taj -- View this message in context: http://www.nabble.com/NameNode-HA-tf4846281.html#a13865411 Sent from the Hadoop Users mailing list archive at Nabble.com.
