Konstantin Shvachko wrote:
1) If i set value of dfs.replication to 3 only in hadoop-site.xml of
namenode(master) and
then restart the cluster will this take effect. or i have to change
hadoop-site.xml at all slaves ?
dfs.replication is the name-node parameter, so you need to restart
only the name-node in order to reset the value.
Actually this is a client parameter. NameNode strictly does not need to
be restarted. All the files created by the clients using new value will
have the new replication.
Raghu.
