I want/need to upgrade my namenode/secondary node hardware. Actually also acts as one of the datanodes.
Could not find any how-to guides. So what is the process to switch from one hardware to the next. 1. For HDFS data : is it just a matter of copying all the hdfs data from old server to new server. 2. what about the decommissioning procedure of data node, is it necessary in that case ? 3.For MapRed: need to change the master in cluster configuration files Any help or pointer welcomed ! -- -MilleBii-
