dfs.hosts.exclude conf/excludes dfs.http.address namenodeip:50070 dfs.balance.bandwidthPerSec 12582912 dfs.block.size 134217728 true dfs.data.dir /hadoop1/data/,/hadoop2/data/ true dfs.datanode.du.reserved 1073741824 true dfs.datanode.handler.count 10 true dfs.name.dir /hadoop/name/ true dfs.namenode.handler.count 64 true dfs.permissions True true dfs.replication 3